Veranstaltungsprogramm

Eine Übersicht aller Sessions/Sitzungen dieser Veranstaltung.
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Nur Sitzungen am Veranstaltungsort 
 
 
Sitzungsübersicht
Ort: Do-X Teatro
Scalaria, St. Wolfgang
Datum: Freitag, 06.10.2023
8:00 - 8:10Eröffnung
Ort: Do-X Teatro
Vorsitzende: Sabine Gabor, Klinik Oberwart
Vorsitzende: Helwig Wundsam, OKL, Barmherzige Schwestern Linz
8:10 - 8:30Block 1: Schilddrüse: Schilddrüsenkarzinom
Ort: Do-X Teatro
Vorsitzende: Günther Klein, Landesklinikum Wiener Neustadt
Vorsitzende: Arvin Imamović, Medizinische Universität Graz
 
8:10 - 8:30

Metastasiertes Schilddrüsenkarzinom: papillär, folikulär, medullär -Megaradiojod vs. Chemotherapie oder gibt es auch Indikationen für eine chirurgische Resektion?

Prommegger, Rupert

Sanatorium Kettenbrücke, Österreich

 
8:30 - 9:10Block 1: Mamma: Mammakarzinom
Ort: Do-X Teatro
Vorsitzende: Michael Gnant, Medizinische Universität Wien
Vorsitzende: Michael Knauer, Kantonsspital St.Gallen
 
8:30 - 8:45

Metastasiertes Mammakarzinom – Chemotherapie vs. Hormontherapie oder gibt es aus der Sicht des Onkologen auch eine Indikation zur Operation?

Bartsch, Rupert

Medizinische Universität Wien, Österreich



8:45 - 9:05

Hepatale Metastasierung – wann soll/darf man resezieren? Pulmonale Metastasierung – wann soll/darf man resezieren?

Kacerovsky-Strobl, Stephanie

Franziskus Spital Margareten, Österreich

 
9:10 - 10:00Block 1: Bronchus: Bronchuskarzinom
Ort: Do-X Teatro
Vorsitzende: Mir Alireza Hoda, Medizinische Universität Wien
Vorsitzende: Sabine Gabor, Klinik Oberwart
 
9:10 - 9:25

Metastasiertes Bronchuskarzinom: Chemotherapie vs. PD-L1 Checkpoint Inhibitoren - state of the art.

Schaberl-Moser, Renate

KRAGES, Österreich



9:25 - 9:45

Synchron metastasiertes Bronchuskarzinom - gibt es Fälle, wo der der Chirurg eine Verbesserung erzielen kann?

Aigner, Clemens

Klinik Floridsdorf, Österreich



Metachron metastasiertes Bronchuskarzinom - Indikationen zur chirurgischen Therapie.

Hoda, Mir Alireza

 
10:30 - 11:10Block 2-1 Ösophagus: Upper GI - Ösophagus
Ort: Do-X Teatro
Vorsitzende: Matthias Paireder, Medizinische Universität Wien
Vorsitzende: Charlotte Rabl, Uniklinikum Salzburg, Landeskrankenhaus Universitätsklinik für Chirurgie
 

Metastasiertes Adeno- oder Plattenepithelkarzinom - Möglichkeiten der modernen Chemo/Immuntherapie.

Rumpold, Holger

Ordensklinikum Linz GmbH Barmherzige Schwestern, Österreich



Oligometastasierungskonzept mit Resektion von Primum/Metastasen beim Ösophaguskarzinom Adeno vs. PE Ca; synchron vs. metachron.

Emmanuel, Klaus

Uniklinikum Salzburg, Landeskrankenhaus Universitätsklinik für Chirurgie, Österreich

 
11:10 - 12:00Block 2 Magen: Upper GI - Magen
Ort: Do-X Teatro
Vorsitzende: Matthias Paireder, Medizinische Universität Wien
Vorsitzende: Charlotte Rabl, Uniklinikum Salzburg, Landeskrankenhaus Universitätsklinik für Chirurgie
 

Metastasierte Magentumore - von Adenokarzinom über GIST bis NET - moderne onkologische Therapie.

Eisterer, Wolfgang



Oligometastasierungskonzept bei Magentumoren – Leber, Lunge, Peritoneum - was macht wann wie Sinn?

Biebl, Matthias

Ordensklinikum Linz GmbH, Österreich

 
12:00 - 13:30Begegnungszone mit Posterpräsentation
Ort: Do-X Teatro
12:00 - 13:30Poster 1: Posterpräsentationen 1
Ort: Do-X Teatro
Vorsitzende: Thomas Niernberger, Gesundheit Burgenland
Vorsitzende: Eva Wallner, Universitätsklinik Salzburg
Chair der Sitzung: Arvin Imamović, Medizinische Universität Graz
 

Surgical Approach for Lung and Liver Metastasis One Incision, One Solution

Vega Palma, Matias Ignacio; Sauseng, Siegfried; Gabor, Sabine; Niernberger, Thomas

Klinik Oberwart, Österreich

Einleitung/Background

Malignant melanoma, as one of the most aggressive forms of skin cancer, tends to develop metastases, significantly deteriorating the prognosis in affected patients. Resection of pulmonary metastases from malignant melanoma show a 5-year survival rate of 33%. Resection of liver metastases in such patients is associated with a median survival of 27 months when R0 resection is feasible. This case report underscores the significance of careful treatment planning and present a revolutionary approach in a patient with malignant melanoma metastasized in two different cavities.

Methoden/Methods
A 78- year-old male patient with a metastatic malignant melanoma in the right lung, accompanied by a concurrent metastasis in segment VII of the right liver lobe. The patient's medical history revealed a previous surgically removed melanoma from the temporal cranial skin region a decade ago.
Ergebnisse/Results

The patient underwent a posterolateral thoracotomy on the right side, followed by an anatomical resection of the lung segment IV and an atypical resection in segment VII through a phrenotomy. The postoperative course remained uncomplicated, and the patient was discharged on the 10th postoperative day.

Zusammenfassung/Conclusion

Considerations for a surgical approach enable rapid oncological meaningful surgical treatment at advanced age with a single incision, one-time anesthesia, and uncomplicated postoperative course.



Metastases from other organs as rare histological findings in thyroid surgery

Fritz, Antonia1,2; Danhel, Lorenz1,2; Havranek, Lukas1,2; Kratzer, Theresa1,2; Punkenhofer, Paul1,2; Punzengruber, Antonia1,2; Rezaie, Daniel1,2; Tatalovic, Stefan1,2; Hackl, Dominik1; Biebl, Matthias1,3; Kirchweger, Patrick1,2,3

1Department of Surgery, Ordensklinikum Linz, Austria; 2VYRAL Linz, Austria; 3Johannes Kepler University Linz, Medical Faculty, Linz, Austria

Background

Metastatic disease of the thyroid gland is a very rare site, only 2-3% of all suspected malignancies of the thyroid gland are metastases of other organs. However, autopsy studies show much higher numbers of up to 24%. The primary tumor is commonly located in the kidney, breast, lung or the digestive tract. Indication for thyroid surgery usually allows exact workup during preoperative evaluation and discrepancies from the preoperative histology are not very common. However, deviations in the postoperative diagnosis sometimes would have required different treatment regimens.

Methods

Retrospective analysis of patients recorded in EUROCRINE after thyroid surgery at the certified center of the Ordensklinikum Linz, Austria, between 2018 and 2023.

Results

1480 patients were included. 6 patients showed metastasis of extrathyroidal cancer. The primary cancer locations were renal cell carcinoma (n=3), rectal cancer (n=1), liposarcoma (n=1) and MALT lymphoma (n=1). Thyroid surgery was performed safely with low complication rates (bleeding=1.1%, hypoparathyroidism=18.9(temporary) and 1.2% (permanent), RLN paralysis= 1.2% (temporary) and 0,4% (permanent).However, preferred treatment approach would have been different if the exact diagnosis would have been known beforehand in 0.4% of the unknown lesions from other organs.

Conclusion

Thyroid surgery is performed safely in specialized centers.However, it is necessary to raise awareness for this rare location of metastasis in patients that develop a thyroidal mass and especially for those that have a history of a prior malignancy, as the surgical resection of the metastasis might not be the treatment of choice in those cases with disseminated diseases.



Interdisciplinary multivisceral resection in metastatic ovarian cancer

Raab, Sandra; Szabo, Kornel; Szilagyi, Imre; Oppelt, Peter; Shamiyeh, Andreas

Allgemein- und Viszeralchirurgie, Kepler Universitätsklinikum Linz, Österreich

Einleitung/Background

Ovarian cancer is the second most common gynecological cause of death. At first presentation 75% of patients show FIGO III/IV, already having abdominal metastases. In our clinic multivisceral resection is performed interdisciplinary nearly every week.

Methoden/Methods

This is a case report of a 60 year old woman, presenting with progresive peritoneal carcinomatosis in ovarian cancer FIGO IIIC. After staging (CT, endoscopy, ascites punction) diagnosis was confirmed with diagnostic laparoscopy and biopsy. Neoadjuvantive chemoimmunotherapy was started because R0 resection was not possible due to multivisceral infiltration of cancer. Debulking surgery was then planned. By laparotomy extensive multivisceral resection was performed (adhesiolysis, deperitonealisation, maior + minor omentectomy, hysterectomy, adnexectomy, rectum resection, right hemicolectomy, splenectomy, cholecystectomy, loop ileostomy).

Ergebnisse/Results

Macroscopically no tumor was left. Chemoimmunotherapy was completed and 5 months later the ileostoma was removed.

Zusammenfassung/Conclusion

Debulking surgery and multivisceral resection in ovarian cancer requires high surgical skills. Surgeons must be flexible and master the full range of visceral surgery.



The prognostic impact of the recurrence distribution pattern following curative intended pancreatic cancer surgery

Kirchweger, Patrick1,2,3; Mayrhofer, Lukas1; Danhel, Lorenz1,3; Fritz, Antonia1,3; Havranek, Lukas1,3; Kratzer, Theresa1,3; Punkenhofer, Paul1,3; Punzengruber, Antonia1,3; Rezaie, Daniel1,3; Tatalovic, Stefan1,3; Függer, Reinhold1; Wundsam, Helwig1; Biebl, Matthias1,2

1Department of Surgery, Ordensklinikum Linz, Austria; 2Johannes Kepler University Linz, Medical Faculty, Linz, Austria; 3VYRAL, Linz, Austria

Background

Early relapse represents a major challenge in pancreatic cancer care. Up to now, little is known about the recurrence distribution pattern and its impact on time until relapse and its prognostic impact following curative intended pancreatic surgery.

Methods

1456 pancreatic resections (702 (48.2%) pancreatic cancer) have been documented in the pancreatic registry of the Ordensklinikum Linz between 2001-2021. The site of recurrence distribution and its impact on prognosis has been evaluated retrospectively.

Results

Relapse following upfront surgery has been documented in 206 patients (29.3%). Site of first recurrence distribution: liver (35%), multiple sites (28.2%), local (14.1%), lung (8.7%), peritoneum (7.8%), lymph nodes (3.4%) and others (2.8%). Site of recurrence was of significant prognostic value (in months): lung (OS 45, DFS 17, SAR 18), local (OS 36, DFS 15), nodal (OS 30, DFS 16), multiple sites (OS 26, DFS 19), peritoneum (OS 22, DFS 13) and liver (OS 19, DFS 9, SAR 5).

Chemotherapy improved survival in all subgroups, especially in nodal positive patients (+11 months), lung and liver only patients, but not in patients with local recurrence.

Conclusion

Recurrence in the liver was associated with the worst, whereas lung only was associated with the best prognosis. Site of relapse was not associated with TNM stage.

Local recurrence was unaffected by neoadjuvant or adjuvant chemotherapy exposure, but neoadjuvant chemotherapy significantly reduced relapse in liver or lung.

Survival is determined by the site of first recurrence but not by the total number of organs involved during the course of the disease.



Surgical treatment of stomach cancer in Austria

Wallner, Eva; Weitzendorfer, Michael; Rabl, Charlotte; Emmanuel, Klaus; Koch, Oliver

Universitätsklinik für Viszeral-, Allgemein- und Thoraxchirurgie, Salzburg, Österreich

Einleitung/Background

In 1997, Rabl et al published the state of surgical treatment of stomach cancer in Austria. Aim of this study is to assess the current state, and furthermore the changes in the last 25 years.

Methoden/Methods

We created an online survey, containing 32 questions about incidence, diagnostic, surgical treatment and postoperative complications in 2022. The survey was sent via the Austrian society for surgery to all general surgery departments.

Ergebnisse/Results

We received data from 12 of the 133 departments (9%).

180 patients, diagnosed with stomach cancer, were treated at surgical departments. The median age was 70,5 years.

In all cases an esophagogastroduodenoscopy with histological diagnosis, a computed tomography and evaluation by multidisciplinary tumor board were performed. The TNM and Laurén classifications are used routinely. The WHO classification is used mostly, the cancer genome atlas hardly ever.

139 patients (77,2%) underwent surgery. 13 operations were performed per department (0 – 28). Most commonly gastrectomy, followed by subtotal gastrectomy. 24 patients (17,2%) needed extended resection (spleen, colon, etc.), 63,3% in 1997. Two stents were placed. Minimally-invasive procedures take place at 6 departments (50%), robotic-assisted surgery at 3 departments (25%).

Surgical complications occurred in 10,8% of patients, in 23,7% in 1997. Mortality rate following resective surgery was 0,5% (8,8% in 1997).

Data collection is without problem for 10 departments, 5-year survival rate is without problem for all departments.

Zusammenfassung/Conlusion

Extended resections, complications and mortality decreased. Minimally-invasive and robotic-assisted surgeries and endoscopic stent-placement were established. Data quality is limited by low response rate.



Circulating tumor DNA (ctDNA) dynamics predict early response to treatment in mGEC after 2 weeks of systemic treatment

Tatalovic, Stefan2,8; Kupferthaler, Alexander4; Grundner, Stephan4; Burghofer, Jonathan5; Schwendinger, Simon6; Jukic, Emina6; Danhel, Lorenz2,8; Fritz, Antonia2,8; Havranek, Lukas2,8; Kratzer, Theresa2,8; Punkenhofer, Paul2,8; Punzengruber, Antonia2,8; Rezaie, Daniel2,8; Doleschal, Bernhard7; Rumpold, Holger1,3,7; Biebl, Matthias2,3; Kirchweger, Patrick1,2,3,8

1Gastrointestinal Cancer Center, Linz, Austria; 2Department of Surgery, Ordensklinikum Linz, Austria; 3Johannes Kepler University Linz, Medical Faculty, Linz, Austria; 4Department of Diagnostic and Interventional Radiology, Ordensklinikum Linz, Austria; 5Laboratory for Molecular Genetic Diagnostics, Ordensklinikum Linz, Austria; 6Institute of Human Genetics, Medical University of Innsbruck, Austria; 7Department of Internal Medicine I for Hematology with Stem Cell Transplantation, Hemostaseology and Medical Oncology, Ordensklinikum Linz, Austria; 8VYRAL, Linz, Austria

Einleitung/Background

Metastasized gastroesophageal carcinoma (mGEC) is associated with a poor overall survival (OS) of approximately 4-10 months. Circulating tumor DNA (ctDNA) is emerging as a promising prognostic biomarker for predicting OS and relapse recently. However, until now there was little knowledge on serial ctDNA detection and its impact on relapse prediction and prognosis in mGEC.

Methoden/Methods

CtDNA detection (ddPCR) was obtained serially from 37 matched tissue (NGS) patients with GEC prior to systemic treatment and every two weeks thereafter until restaging (n=173 samples). Results have been correlated with response to treatment (restaging), overall survival (OS) and progression free survival (PFS).

Ergebnisse/Results

Pretherapeutic detection rate was 77.8%. A decline of ctDNA under 58% of the pretherapeutic value after 2 weeks of systemic treatment was accompanied with a sensitivity of 66.7 and specificity of 100%. Response to treatment assessment was correct in 54.2% (pretherapeutically pos./neg.), 85.7% (dynamics at week 2) and 85.7% (dynamics at week 4) respectively. In contrast to pretherapeutic ctDNA positivity (n.s, p=0.445), ctDNA dynamics to this cutoff was significantly associated with OS (4.1 (95% CI 2.1-6.1) vs. 13.6 (95% CI 10.4-16.6) months, p<0.000) and PFS (3.2 (1.9-4.5) vs. 9.5 (95% CI 5.5-13-5), p=0.001) after two weeks of treatment.

Zusammenfassung/Conclusion

CtDNA could be used for early evaluation of response to treatment (NACT/CTX) in the future, saving 83.3% of unevaluated treatment time and chemotoxicity of patients suffering from relapse in GEC and allowing early change of treatment with anticipated prognostic impact.



Revolutionizing systemic treatment evaluation in GI cancer care: ctDNA as a unifiable biomarker to predict response to treatment after 2 weeks of chemotherapy at the same cut-off for GEC, PC and CRC

Kirchweger, Patrick1,2,3,8; Kupferthaler, Alexander4; Burghofer, Jonathan5; Schwendinger, Simon6; Jukic, Emina6; Doleschal, Bernhard7; Danhel, Lorenz8; Fritz, Antonia8; Havranek, Lukas8; Kratzer, Theresa8; Punkenhofer, Paul8; Punzengruber, Antonia8; Rezaie, Daniel8; Tatalovic, Stefan8; Wundsam, Helwig2; Biebl, Matthias2,3; Rumpold, Holger1,3,7

1Gastrointestinal Cancer Center, Linz, Austria; 2Department of Surgery, Ordensklinikum Linz, Austria; 3Johannes Kepler University Linz, Medical Faculty, Linz, Austria; 4Department of Diagnostic and Interventional Radiology, Ordensklinikum Linz, Austria; 5Laboratory for Molecular Genetic Diagnostics, Ordensklinikum Linz, Austria; 6Institute of Human Genetics, Medical University of Innsbruck, Austria; 7Department of Internal Medicine I for Hematology with Stem Cell Transplantation, Hemostaseology and Medical Oncology, Ordensklinikum Linz, Austria; 8VYRAL, Linz, Austria

Background

ctDNA has emerged as promising biomarker in gastrointestinal cancer. However, definition for detectability and cut-offs are reported very heterogeneously.

We first in man evaluated response to treatment and correlation to actual volumetric tumor burden at a unifiable cut-off for dynamic changes during chemotherapy in 3 different major GI-cancer types (n=924 samples).

Methods

Liquid biopsy samples for n=185 stage IV patients with gastroesophageal (GEC, n=37), pancreatic (PC, n=70) and colorectal cancer (CRC, n=78) have been prospectively acquired pretherapeutically and every 2 weeks during chemotherapy until restaging, analyzed using ddPCR and correlated with response to treatment and actual volumetric tumor burden.

Results

Detection rates were 88.5% (CRC), 77.8% (GEC) and 64.3% (PC). Median pretherapeutic ctDNA MAF was 11.9% (CRC), 1.5% (GEC) and 1.6% (PC).

ctDNA was significantly correlated with total tumor volume, especially with hepatic and lung lesion volume, but not with primary tumor volume in all tumor entities.

Logistic regression revealed a decline of under 58% of the pretherapeutic MAF to predict response to treatment already after 2 weeks (CRC spec. 97.8%, sens. 92.3%, GEC spec. 100%, sens. 66.7%, PC spec. 100%, sens. 91.7%).

This was accompanied with a significant impact on OS and PFS for all tumor entities.

Discussion

ctDNA represents an already clinical applicable biomarker with remarkable sensitivity and specificity in displaying actual tumor burden, prediction of prognosis and response to treatment. This biomarker is superior to current gold standard markers CEA, CA19-9 and CA72-4 and predicts response to systemic treatment >80% faster than computed tomography.



Correlation of ctDNA with actual volumetric tumor burden and outcome in mCRC

Kirchweger, Patrick1,2,3,8; Kupferthaler, Alexander4; Burghofer, Jonathan5; Schwendinger, Simon6; Jukic, Emina6; Doleschal, Bernhard7; Danhel, Lorenz8; Fritz, Antonia8; Havranek, Lukas8; Kratzer, Theresa8; Punkenhofer, Paul8; Punzengruber, Antonia8; Rezaie, Daniel8; Tatalovic, Stefan8; Wundsam, Helwig2; Biebl, Matthias2,3; Rumpold, Holger1,7

1Gastrointestinal Cancer Center, Linz, Austria; 2Department of Surgery, Ordensklinikum Linz, Austria; 3Johannes Kepler University Linz, Medical Faculty, Linz, Austria; 4Department of Diagnostic and Interventional Radiology, Ordensklinikum Linz, Austria; 5Laboratory for Molecular Genetic Diagnostics, Ordensklinikum Linz, Austria; 6Institute of Human Genetics, Medical University of Innsbruck, Austria; 7Department of Internal Medicine I for Hematology with Stem Cell Transplantation, Hemostaseology and Medical Oncology, Ordensklinikum Linz, Austria; 8VYRAL, Linz, Austria

Background

ctDNA has emerged as a promising biomarker in colorectal cancer (mCRC) with strong association to prognosis that is currently evaluated for its clinical applicability in response prediction. However, little is known about its actual derivation and correlation to tumor volume and site.

Methods

Liquid biopsy samples (n=384) for n=78 stage IV mCRC patients have been acquired pretherapeutically and every 2 weeks during chemotherapy until restaging, analyzed using ddPCR (for mutational (e.g. KRAS) and methylation markers (WIF/NPY)) and correlated with response to treatment and actual volumetric tumor burden.

Results

Pretherapeutic ctDNA was detectable in 69 patients (88.5%) and median MAF was 11.9%. Mutational pattern was very heterogeneously with 28 different mutations (KRAS 66.7%, TP 17.9%, BRAF 11.5%, NRAS 2.6%).

ctDNA correctly predicted response to treatment in 95.8% and 87.5% after only 2 weeks of treatment (CEA 74.5% and 5.5%, NPY/WIF 85.1% and 64.2%).

ctDNA was associated with total tumor volume (R=0.568, p<0.000), especially with liver tumor volume (R=0.713, p<0.000). Similar results were found for methylation (R=0.543, p<0.000; R=0.733, p<0.000) and CEA (R=0.619, p<0.000; R=0.759, p<0.000).

ctDNA dynamics after 2 weeks of treatment showed strong impact on OS (8.0 (95% CI 5.6-10.4) vs. 21.0 (95% CI 16.7-25.3) months) and PFS (2.0 (95% CI 1.3-2.7) vs. 11.0 (95% CI 9.0-13.0) months, p<0.000).

Discussion

ctDNA is correlated with actual volumetric tumor burden.

ctDNA is superior to CEA and WIF/NPY in detecting response to treatment.

ctDNA is the strongest biomarker for prognosis and predicts response to treatment after only 2 weeks of systemic treatment.



Achieving clinical applicability for circulating tumor DNA (ctDNA) as biomarker for neoadjuvant chemotherapy vs. surgery in localized pancreatic cancer

Kirchweger, Patrick1,2,3,8; Kupferthaler, Alexander4; Doleschal, Bernhard5; Burghofer, Jonathan6; Schwendinger, Simon7; Ennemoser, Anna7; Danhel, Lorenz8; Fritz, Antonia8; Havranek, Lukas8; Kratzer, Theresa8; Punkenhofer, Paul8; Punzengruber, Antonia8; Rezaie, Daniel8; Tatalovic, Stefan8; Wundsam, Helwig2; Biebl, Matthias2,3; Rumpold, Holger1,3,5

1Gastrointestinal Cancer Center, Linz, Austria; 2Department of Surgery, Ordensklinikum Linz, Austria; 3Johannes Kepler University Linz, Medical Faculty, Linz, Austria; 4Department of Diagnostic and Interventional Radiology, Ordensklinikum Linz, Austria; 5Department of Internal Medicine I for Hematology with Stem Cell Transplantation, Hemostaseology and Medical Oncology, Ordensklinikum Linz, Austria; 6Laboratory for Molecular Genetic Diagnostics, Ordensklinikum Linz, Austria; 7Institute of Human Genetics, Medical University of Innsbruck, Austria; 8VYRAL, Linz, Austria

Background

ctDNA derives from distant metastases and advanced locoregional disease in pancreatic cancer (PDAC). Furthermore, ctDNA can be used to predict response to treatment after only 2 weeks of systemic treatment in mPDAC. Applicability for NACT evaluation in localized PDAC was hampered by low detection rates and thus necessity of broad-spectrum analysis and potential delay of treatment up to now.

Methods

Liquid biopsy samples of n=147 patients with locPDAC were collected preoperatively, one (n=66) and 10 days (n=30) after surgery. Samples were evaluated using ddPCR in a new testing regimen and results were correlated to volumetric findings and outcome.

Results

Pretherapeutic detection rates have improved from 10% to 36.1% (19.7% (1st day), 13.3% (10th day)). ctDNA did not correlate with primary tumor volume (R=0.071, p=0.605), but nodal positivity (p=0.029).

Pretherapeutic ctDNA was associated with significantly worse OS (10.1 (95%CI 4-16.2) vs. 36 (95%CI 22.1-49.9) months) and DFS (6 (95%CI 2.6-9.4) vs. 23.5 (95%CI 17.9-29.1) months).

Pretherapeutic CA19-9 was not associated with OS or DFS. Neither above 500 U/ml (p=0.285, p=0.162), nor >1000U/ml (p=0.419, p=0.495).

Postoperative ctDNA detectability did not reach statistical significance but showed strong correlation to OS (low numbers, HR 3.120, p=0.083).

Discussion

Our new testing strategy significantly improves the pretherapeutic detection rate (3x) with constantly high prognostic impact. Turnaround time from sampling of liquid biopsy to results and thus clinical assessment for treatment decisions is only 3 days.

Thus, these findings pave the way for ctDNA guided treatment decisions in locPDAC (NACT vs. upfront surgery) under study conditions.



Endoskopische Gastroenterostomie mit Hilfe von LAMS – Entwicklung zur standardisierten Technik

Punkenhofer, Paul; Fritz, Antonia; Kirchweger, Patrick; Kratzer, Theresa; Punzengruber, Antonia; Rezaie, Daniel; Shalamberidze, Demetre; Weisser, Elena; Danhel, Lorenz; Havranek, Lukas; Tatalovic, Stefan; Biebl, Matthias; Spaun, Georg

Ordensklinikum Linz GmbH, Österreich

Einleitung/Background
Gastric outlet obstructions wurden bisher zum größten Teil chirurgisch im Sinne einer genähten, oder mittels Stapler angelegten, Gastroenterostomie (GE) behandelt.
In einer modernen interventionellen Endoskopieeinheit ist eine flexibel endosonographisch angelegte GE, mithilfe von lumen apposing metal stents (LAMS), bereits eine etablierte Alternative zur operativ angelegten GE.

Methoden/Methods
Es wurde eine retrospektive Datenanalyse aller PatientInnen mit Anlage einer flexibel endoskopischen endosonographisch gezielten Gastroenterostomie mit Hilfe eines lumen apposing metal stents (Hot Axios™) von 2017 bis 01/2023 durchgeführt. Diese Methode wurde von 2017 bis 2020 getestet und ein Standard entwickelt. Ab 01/2021 wurden alle Eingriffe standardisiert durchgeführt. Es wurden peri- und postinterventionelle Komplikationen sowie die postoperative Funktionalität erhoben.

Ergebnisse/Results
35 Patienten (19 Frauen/16 Männer) erhielten im Untersuchungszeitraum eine LAMS Gastroenterostomie. 32 Patienten erhielten eine funktionelle, komplikationslose Gastroenterostomie (91,4%). 1 Patient erlitt eine postinterventionelle Blutung mit anschließend angiographischem Coiling, bei 2 Patienten kam es zu einer Fehllage des Stents.
Im Zeitraum der Lernkurve vor Standardisierung beträgt die Komplikationsrate 12,5% (1 von 8). Seit Etablierung eines standardisierten Verfahrens beträgt die Komplikationsrate 7,4% (2 von 27).
Die interventionsassoziierte Mortalitätsrate beträgt 0%.
Die Gesamtmorbidität beträgt 8,6%.

Zusammenfassung/Conclusion

Die Durchführung einer endoskopischen Gastroenterostomie ist eine technisch äußerst anspruchsvolle Intervention, welche ein standardisiertes Vorgehen erfordert. Seit Etablierung eines Standards konnten die Zahlen der sicheren Durchführung gesteigert und die Interventionsdauer verkürzt werden. Die Durchführung einer LAMS Gastroenterostomie sollte nur von Untersuchern mit hoher Expertise in Endosonographie durchgeführt werden.



Cytoreductive surgery (CRS) and hyperthermal intraperitoneal chemotherapy (HIPEC) in peritoneal metastatic colorectal cancer: 10 years of CRS and HIPEC at the Ordensklinikum Linz

Rezaie, Daniel1,3; Rohregger, Klemens1; Linz, Vyral3; Emmanuel, Klaus4; Biebl, Matthias1,2; Kirchweger, Patrick1,2,3

1Department of Surgery, Ordensklinikum Linz, Austria; 2Johannes Kepler University Linz, Medical Faculty, Linz, Austria; 3VYRAL, Linz, Austria; 4Department of Surgery, Paracelsus Medical University Salzburg, Salzburg, Austria

Introduction: Hyperthermal intraperitoneal chemotherapy (HIPEC) in combination with cytoreductive surgery (CRS) has been increasingly used to treat peritoneal metastases in colorectal cancer. The aim of this study is to evaluate the clinical effectiveness as well as the complication and mortality rates of this therapy option.

Methods: Patients with peritoneal metastatic colorectal cancer (small bowel (n=3; 3.5%), right colon (n=35; 41.2%), left colon (n=41; 48.2%) and appendix (n=6; 7.1%)) who underwent CRS/HIPEC at the Ordensklinikum Linz (OKL) between 2013 and 2022 (n=85/145) versus a matched comparison group (chemotherapy (CTX) alone for peritoneum only colorectal cancer (PERonly mCRC)) were analysed retrospectively from our prospective database.
Results:
Tumours were classified as T4 in 67.1% of patients (n=57) and 58.8% (n=50) were nodal positive. The peritoneal carcinoma index (PCI) was <10 (61.9%), 11-15 (12%) and ≥16 (13.1%). Median PCI was 4 (IQR 2-11). Any complication was registered in 53% (n=45), of which 36.5% CD<3b and 16.5% CD ≥3b. However, 30d mortality was 0%.

CRS/HIPEC was superior to CTX alone in both median PFS (58 months (95% CI 23.7-92.3), p=0.022) and OS ((mean 68. 6 (95% CI 58. 4-78. 7) vs. 26. 4 months (95% CI 15. 8-36. 9); p<0.000; (median not reached in CRS/HIPEC)).

Conclusion: CRS/HIPEC shows a clear survival advantage in PERonly mCRC compared to chemotherapy alone. Therefore, the possibility of CRS/HIPEC therapy should be considered in these patients. In order to ensure a complete cytoreduction with low morbidity and mortality, this procedure should be performed in a high-volume centre.



The Pulmonary Nodule and Breast Carcinoma - A Surgical Chameleon

Reithofer, Nina; Vega Palma, Matias Ignacio; Sauseng, Siegfried; Gabor, Sabine; Hochwarter, Gerhard; Niernberger, Thomas

Klinik Oberwart

Introduction/Background:

Pulmonary round lesions are one of the most common comorbidities in both the initial presentation and the oncological follow-up of patients with breast cancer. However, recent years' experiences underscore that the straightforward assumption of a lung metastasis is not always accurate.

Methods:

Based on three cases, various methods for diagnosing and treating pulmonary round lesions were investigated. Diagnostic procedures such as CT-guided biopsies, tumor marker monitoring, and positron emission tomography were employed to identify and characterize these tumors.

Results:

Through the meticulous investigation using the aforementioned methods, different diagnoses were established, leading to significant therapeutic consequences.

Summary/Conclusion:

Histological confirmation of a pulmonary round lesion and subsequent surgical resection should be considered standard procedures. These case studies illustrate the spectrum of possible diagnoses and the resulting diverse therapeutic approaches.

 
12:00 - 13:30Poster 2: Posterpräsentationen 2
Ort: Do-X Teatro
Vorsitzende: Charlotte Rabl, Uniklinikum Salzburg, Landeskrankenhaus Universitätsklinik für Chirurgie
Vorsitzende: Reinhold Klug, LK Horn
 

Metachronic lung metastasis following operated PDAC of the pancreatic head. Is surgery still offering a therapeutic possibility ? Chronology of a success through an aggressive surgical treatment sequence.

Sauseng, Siegfried1; Beganovic, Mirza1; Gabor, Sabine1; Vega-Palma, Matias Ignacio1; Matzi, Veronika2; Niernberger, Thomas1

1Klinik Oberwart, Abteilung für Allgemein-, Thorax-, Viszeral- und Gefäßchirurgie Österreich; 2Privatklinik Villach, Österreich

Einleitung/Background

Although therapeutic recommendations for the surgical treatment of synchronously occurring liver metastases in the treatment of PDAC are existing, a metachronous metastasis after resection of the primum continues to pose major challenges for the treating physicians.

Even if large-scale case-series and randomized trials on this topic are missing, small case series and case reports already show a benefit for resections of metachronous isolated lung metastases. On the basis of a case study, we are presenting an (aggressive) surgical therapy approach which led to a significant OAS increase.

Material and methods:

We are presenting the case of a 79-year-old female patient with newly emerged pulmonary nodules in both lungs 42 months after initial surgical treatment of neoadjuvant treated PDAC. The nodules were surgically removed (with histological confirmation of the PDAC metastasis). After another 12 months, the patient showed new nodules in the right lung which were treated with microwave ablation. 27 months after this treatment, we detected another three foci in the left lung which were surgically removed. (with the histological confirmation of PDAC metastases).

Result:

After this last treatment the patient is now free of signs of disease

Conclusion:

Despite the lack of corresponding literature recommendations, the clinical oncological course, in this case, is justifying the repeated surgical procedures.

This case underlines that there must be an opinionated and willful surgical representative in the tumor board.

Molecular patterns, laboratory values and clinical parameters which help to identify patients who are more likely to benefit from such therapies are desirable.



Is the K-ras mutation status a prognostical tool to predict metastasis formation for CRC patients??

Sauseng, Siegfried1; Pichler, Martin2; Vega-Palma, Matias Ignacio1; Reithofer, Nina1; Kaddri, Abdelfattah1; Niernberger, Thomas1

1Klinik Oberwart, Abteilung für Allgemein-, Thorax-, Viszeral- und Gefäßchirurgie, Österreich; 2Klinikum Augsburg, Abteilung für Onkologie

Introduction

CRC is the third most common tumor entity in the Western world. New CRC cases will increase from 1.9 million to 3.2 million untill 2040. Although environmental factors are an increasing risk factor today, genetic aberrations play a key role in CRC development and tumorigenesis. In particular, the K-ras oncogene seems to be of immense importance as a "gatekeeper" of the adenoma-carcinoma sequence.

Whether the mutation status per se has a prognostic power for overall survival or leeds to a higher probability of metastatic formations remains unclear.

Methods

The aim of our study was to find out whether the K-ras mutation status itself influences the probability for metastatic formations or not. We performed a retrospective workup of over 600 patients treated in three centers. Primarily, the distributions were represented by means of descriptive statistics. Statistical analyses were then used to show a difference in cancer-specific survival and metastasis formation for patients with or without K-ras mutation.

Results

The hypothesis that K-RAS status affects the cancer-specific survival was evaluated and rejected using Kaplan-Meier curves and log rank tests. Neither the univariate nor the multivariate analysis showed a significant difference. The K-ras mutation status showed a slightly higher metastasis rate in the case of right-sided tumors.

Conclusion

With our study results, the prognostic significance of K-ras mutation status for the distribution of metastasis can be refuted. Only for the subgroup of right-sided carcinomas with a K-ras point mutation on codon thirteen, there seems to be a slightly higher probability of metastasis.



Immunological impact of Axl/TGF-beta signaling in hepatocellular carcinoma

Schuler, Pia1; Ortmayr, Gregor1; Hillinger, Theresa1; Starlinger, Patrick2; Grünberger, Thomas3; Chen, Doris4; Mikulits, Wolfgang1

1Center for Cancer Research, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria; 2Department of Surgery, Division of Hepatobiliary and Pancreatic Surgery, Mayo Clinic, Rochester, MN, USA; 3Department of Surgery, HPB Center, Viennese Health Network, Clinic Favoriten and Sigmund Freud Private University, Vienna, Austria; 4Max Perutz Labs, Department of Chromosome Biology, Center for Integrative Bioinformatics Vienna, University of Vienna, Vienna, Austria

Einleitung/Background
A minority of hepatocellular carcinoma (HCC) patients is susceptible to
conventional immune checkpoint blockade (ICB). Interestingly, the immune-exhausted class, which is associated with poor response to ICB, is also linked to “highly activated”, aberrant TGF-beta signaling. In HCC, the receptor tyrosine kinase Axl collaborates with TGF-beta by the phosphorylation of Smad3 at serine-213 in the linker region (Smad3L-Ser213) causing an aberrant, tumor-promoting TGF-beta signaling, which most likely also translates into the TME. As underlying mechanisms remain unclear, we aim to assess how Smad3L-Ser213-linked TGF-beta signatures shape an immuno-suppressive TME.

Methoden/Methods
We used RNA-seq analysis of HCC models to identify targets of the Axl/TGF-beta
signaling. Modulation of Axl/TGF-beta activity and analyses in publicly available data sets of HCC patients were employed to verify target expression.

Ergebnisse/Results
HCC cells showing aberrant TGF-beta signaling together with either proficiency or
deficiency in Axl expression, were subjected to RNA-seq analysis. Uridine phosphorylase (UPP)1 as the most promising target is associated with poor prognosis and immune evasion. Interference with Smad3L-Ser213 phosphorylation by inhibition of 14-3-3ζ or c-JNK confirmed UPP1 as a target of aberrant TGF-beta signaling. Genetic intervention with UPP1 reduced cell invasion and migration, while proliferation and survival of HCC cells remained unaffect

Zusammenfassung/Conclusion
We identified UPP1 as a target of Axl-driven, aberrant TGF-beta signaling in HCC
cells. The link to immune escape and poor prognosis provides a clear rationale for further assessing its impact in reshaping the TME based on in vivo models and analyses in prospective HCC patient samples



Minimally Invasive Esophagectomy - Clinical Implementation of a new Technique

Wykypiel, Heinz; Gehwolf, Philipp; Kienzl-Wagner, Katrin; Berchtold, Valeria; Puecher, Andreas; Schmid, Thomas; Cakar-Beck, Fergül; Schäfer, Aline

Universitätsklinik für Visceral-, Transplantations- und Thoraxchirurgie, Medizinische Universität Innsbruck

Background:
Minimally invasive surgery is becoming the method of choice for esophageal resection for cancer worldwide.

Methods:
Retrospective analysis of prospectively collected clinical data in a tertiary care center with a detailed description of our program progression.

Results:
Between 2010 and 2023, 136 transthoracic esophagus resections were carried out in total. The study group comprises 116 operations, 69 completely minimally invasive and 47 in hybrid technique. 80,0% of the study group were operated within a multimodal approach. The median operation time was 431 min (±103). The R0 resection rate was 100%. Fourty-two patients (36,2%) had no postoperative complications. Postoperative Morbidity Clavien-Dindo >IIIb was 27 %. Postoperative 90d mortality was 1,7%. The mean number of harvested lymph nodes in the last fourth of cancer patients was 31. The anastomosis insufficiency rate for reoperation was 4% (Ivor-Lewis 4,2%, McKeown 5%).

Conclusions:
With extensive expertise in minimally invasive abdominal and thoracic high-end surgery, implementing a minimally invasive esophagus resection program is feasible with a clinical and oncologic outcome within generally accepted limits.



A rare case of rectum wall metastasis in pancreatic cancer - a case report

Gal, Orsolya; Schober, Sarah; Langmayr, Johannes; Synek, Christof; Schwenninger, Marie-Valerie; Al-Khaffaf, Daria; Schwanzer, Erhard

LK Korneuburg, Österreich

Einleitung/Background

Up to 40% of patients at the initial diagnosis of pancreatic cancer are without secondary blastomas. These occur more often in the liver and peritoneum, rarely in the adrenal glands and bones. There are only 10 case reports in the English literature describing metastasis to the colo-rectum.

Methoden/Methods

An 82-year-old patient presented to the emergency room with abdominal pain, nausea, vomiting and stool retention. The CT scan showed the picture of a mechanical colon ileus. The patient had been treated oncologically for UICC stage IV pancreatic adenocarcinoma of the pancreatic tail. Metastases in the liver segment VII and in the rectum had been radiologically and histologically confirmed, whereas a metastasis in the stomach had been described only radiologically. Since the initial diganosis the patient had received palliative chemotherapy which stabilized the disease for 19 months. A laparotomy with deep anterior rectum resection and creation of a stoma of the descending colon was performed. Histological workup confirmed the metastasis. The postoperative course was uneventful, palliative chemotherapy was continued and the patient lived another 8 months.

Ergebnisse/Results

Colo-rectal metastasis from pancreatic carcinoma has rarely been described. The most commopn location of secondary blastomas were the sigmoid colon and the transverse colon. The mean survival rate was 7 months after the initial diagnosis, our patient survived for 27 months.

Zusammenfassung/Conclusion

This is the 11th case of colon metastasis from pancreatic cancer in the English literature. It is important to consider metastasis if a colonic mass occurs in the presence of pancreatic cancer.

 
13:30 - 14:10Block 2-2 Pankreas: HPB - Pankreas
Ort: Do-X Teatro
Vorsitzende: Helwig Wundsam, OKL, Barmherzige Schwestern Linz
Vorsitzende: Friedrich Längle, Landesklinikum Wiener Neustadt
 

Das ductale Adenokarzinom des Pankreas ist sowieso primär eine systemische Erkrankung und wird daher in Zukunft nur mehr vom Onkologen behandelt? Kann die Bestimmung von ctDNA in der liquid biopsy in der Therapieplanung helfen?

Greil, Richard

Uniklinikum Salzburg, Österreich



Oligometastasierungskonzept beim Pankreaskarzinom – wann und wie macht was Sinn?

Strobel, Oliver

Medizinische Universität Wien, Österreich

 
14:10 - 14:50Block 2-2 Leber: HPB - Leber
Ort: Do-X Teatro
Vorsitzende: Helwig Wundsam, OKL, Barmherzige Schwestern Linz
Vorsitzende: Friedrich Längle, Landesklinikum Wiener Neustadt
 
14:10 - 14:30

HCC und CCC im metastasierten Stadium aus Sicht des Onkologen.

Schaberl-Moser, Renate



14:30 - 14:50

Prognoseverbesserung durch Resektion/Transplantation von Leber- und Gallenblasen/gangstumoren mit Lymphknoten/intrahepatischen vs. Fernmetastasen?

Schneeberger, Stefan

Medizinische Universität Innsbruck, Österreich

 
14:50 - 15:20Festvortrag
Ort: Do-X Teatro
 
14:50 - 15:20

Festvortrag

Maio, Giovanni

Albert-Ludwigs-Universität Freiburg, Uni Freiburg, Deutschland

 
15:45 - 16:25Block 3 Kolorektal: CRC-onkologische Sicht
Ort: Do-X Teatro
Vorsitzende: Stephan Kriwanek, Burgenländische Krankenanstalten- Gesellschaft m.b.H.
Vorsitzende: Siegfried Sauseng, Klinik Oberwart
 
15:45 - 16:05

Linkes vs. Rechtes Kolon – machts einen Unterschied? Leber/Lunge vs. Peritoneum - was sollten wir wann wie angehen? Ein onkologisches Konzept.

Doleschal, Bernhard

Ordensklinikum Linz GmbH Barmherzige Schwestern, Österreich



16:05 - 16:25

Metastasiertes Rektumkarzinom mit kurativem Therapieansatz – immer multimodal? Metachron vs synchron, BRAF mutiert? MSI?

Amann, Arno

Medizinische Universität Innsbruck, Österreich

 
16:25 - 17:30Block 3-2 Kolorektal: CRC-chirurgische Sicht
Ort: Do-X Teatro
Vorsitzende: Stefan Riss, Medizinische Universität Wien
Vorsitzende: Andreas Shamiyeh, Kepler Universitätsklinikum
 
16:25 - 16:37

Grenzen der lokalen Resektabilität beim Kolonkarzinom

Aigner, Felix

Barmherzige Brüder, Krankenhaus Graz, Österreich



16:37 - 16:49

Grenzen der lokalen Resektabilität beim Rektumkarzinom.

Zitt, Matthias

Krankenhaus der Stadt Dornbirn, Österreich



16:49 - 17:01

Grenzen der Resektabilität bei Lebermetastasen

Kaczirek, Klaus

Medizinische Universität Innsbruck, Österreich



17:01 - 17:13

Grenzen der Resektabilität bei Lungenmetastasen.

Lindenmann, Jörg

Medizinische Universität Graz, Österreich



17:13 - 17:25

Peritoneal metastasiertes CRC vorbekannt, elektiv als Zufallsbefund, in der Akutsituation: Was mache ich wann wie am besten?

Rohregger, Klemens

 
Datum: Samstag, 07.10.2023
8:30 - 10:15SA: Block 1: Technik der Metastasenresektion
Ort: Do-X Teatro
Vorsitzende: Ingmar Königsrainer, Landeskrankenhaus Feldkirch
Vorsitzende: Ingrid Haunold, Krankenhaus der Barmherzigen Schwestern Wien
 

Technik Leberresektion (inkl. Hypertrophiebehandlung, Splitting) - state of the art.

Grünberger, Thomas

Sigmund Freud Privatuniversität Wien, Krankenhaus Rudolfsstiftung, Österreich



Technik Lungenresektion (inkl. LK ja nein?, minimal invasiv, Laser, ...) -

Augustin, Florian

Medizinische Universität Innsbruck, Österreich



Technik Peritonektomie/HIPEC state of the art

Perathoner, Alexander

Medizinische Universität Innsbruck, Österreich



Technik und Indikation PIPAC

Jäger, Tarkan



Möglichkeiten und Grenzen der stereotaktischen RFA.

Bale, Reto

Medizinische Universität Innsbruck, Österreich



Oligometastasierung -aus der Sicht der Strahlentherapie

Stranzl-Lawatsch, Heidi

Medizinische Universität Graz, Österreich

 
10:45 - 11:10SA: Block 2: Extended Resections
Ort: Do-X Teatro
Vorsitzende: Peter Götzinger, Universitätsklinikum St. Pölten
Vorsitzende: Hubert Hauser, Steiermärkische Krankenanstaltengesellschaft m.b.H. LKH Graz II, Standort West
 
10:45 - 10:57

Multiviszerale Eingriffe und Indikation/Sinnhaftigkeit

Öllinger, Robert

Charité Universitätsmedizin Berlin, Deutschland



Metastasenleber – Indikationen zur Transplantation - gibt es die?

Sucher, Robert

Medizinische Universität Graz, Österreich

 
11:15 - 12:00SA: Block 2-2: Rezidivchirurgie / Salvagechirurgie
Ort: Do-X Teatro
Vorsitzende: Peter Götzinger, Universitätsklinikum St. Pölten
Vorsitzende: Hubert Hauser, Steiermärkische Krankenanstaltengesellschaft m.b.H. LKH Graz II, Standort West
 
11:15 - 11:27

Rektumkarzinom/Analkarzinom

Stift, Anton

Medizinische Universität Wien, Österreich



11:27 - 11:39

Ösophaguskarzinom

Koch, Oliver

Uniklinikum Salzburg, Österreich

 

 
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