AZ Sint-Lucas

Teaching point: Desmoid tumors are rare locally aggressive soft tissue tumors that can occur anywhere in the body and have a varying imaging appearance.

Abstract PORCSE studygroup: Anneline Cremer (Erasme University Hospital Department of Gastroenterology Brussels Belgium) João A. Cunha Neves (ULS-Algarve Department of Gastroenterology Portimão Portugal) Andreas Kapsoritakis (University Hospital of Larissa IBD unit- Department of Gastroenterology Larissa Greece) Mircea Diculescu (Faculty of Medicine- Carol Davila University of Medicine and Pharmacy- Fundeni Clinical Institute Department of Gastroenterology Bucharest Romania) Lieven Pouillon (Imelda Hospital Bonheiden Department of Gastroenterology and Hepatology Bonheiden Belgium) Ioannis E. Koutroubakis (University Hospital Heraklion Department of Gastroenterology Heraklion- Crete Greece) Laura Nieto (Hospital Clinico Universitario de Santiago de Compostela- Health Research Institute of Santiago de Compostela IDIS Gastroenterology Compostela Spain) Sophie Claeys (AZ Sint-Lucas Department of Gastroenterology Ghent Belgium) Iago Rodríguez-Lago (Hospital Universitario de Galdakao- Biobizkaia Health Research Institute Department of Gastroenterology Galdakao Spain) Pauline Rivière (Bordeaux University Hospitals Department of Gastroenterology Bordeaux France) Serkan Dumanli (Gazi University Department of Gastroenterology Ankara Turkey) Francisco Portela (ULS de Coimbra Department of Gastroenterology Coimbra Portugal) Ian Arnott (Western General Hospital IBD unit Edinburgh United Kingdom) Pinelopi Nikolaou (Venizeleio General Hospital Department of Gastroenterology Heraklion Greece) Joana Revés (Hospital Beatriz Ângelo Division of Gastroenterology- ULS Loures-Odivelas Loures Portugal) Inês Botto (Unidade local de saúde de santa maria- Clinica Universitária de Gastroenterologia- Faculdade de Medicina de Lisboa Servico Gastroenterologia e Hpatologia Lisbon Portugal) Margalida Calafat (Hospital Universitari Germans Trias i Pujol and CIBEREHD Gastroenterology Badalona Spain) Background The retrospective, multicentric, observational PORCSE study evaluated postoperative recurrence of Crohn’s disease after ileocaecal resection. Early medical prophylaxis (proactive strategy, cohort1) was found to have lower rates of endoscopic (Rutgeerts >i1) and clinical postoperative recurrence compared to expectant management (reactive strategy, cohort2) at first endoscopic evaluation. In this analysis from a subgroup of the PORCSE population, long term outcomes of these 2 strategies are explored. Methods A subgroup analysis was performed in patients with extended follow-up beyond the timeframe of the original PORCSE study (Fig1). Primary endpoints were surgical (sPOR) and clinical (cPOR) recurrence. Endoscopic disease activity and progression were evaluated as secondary endpoints. Progression was defined as an increase in Rutgeerts score (>i1) and/or development of colon inflammation from first to consecutive postoperative endoscopies. Logistic regression models with propensity score matching were fitted to adjust for confounding factors in comparing the proactive and reactive strategy. Results For 92.2% of the 346 originally included patients, a mean additional follow-up duration of 38.5months (SD24.5) was available (mean total follow-up 110.9months, SD44.8). sPOR and cPOR rate was numerically higher with the reactive strategy. However these differences were not statistically significant (sPOR: cohort1:13.2%, cohort2:18.2%; OR1.78, 95%CI 0.73-4.34, P = 0.202 - cPOR: cohort1: 39.3%, cohort2:49.7%; OR1.73, 95%CI 0.92-3.24, P = 0.089). No difference was found in IBD-related hospitalisation rate (cohort1: 10.8%, cohort2: 10.1%; OR 1.48, 95%CI 0.53-4.18, P = 0.457). Survival analysis did not show a significant difference for time to sPOR (HR1.34, 95% CI 0.59-3.06, P = 0.485) nor in time to cPOR (HR1.28, 95%CI 0.35-4.66, P = 0.713). Rates of endoscopic disease activity (Rutgeerts>i1 and/or colonic inflammation) at consecutive endoscopies after initial postoperative endoscopy did not differ (cohort1:59.2%, cohort2:57.8%, OR0.70, 95%CI 0.31-1.57, P = 0.381). Univariate analysis revealed a higher rate of endoscopic progression with a proactive strategy (cohort1: 20.6%, cohort2: 10.6%, P = 0.041). However, after correction for confounders this difference was no longer significant (OR2.44, 95%CI 0.92-6.48, P = 0.073). Conclusion In this large subgroup of patients with extended follow-up from the original PORCSE study, proactive medical prophylaxis after ileocaecal resection showed no statistically significant differences compared with a reactive approach in reducing the rate of surgical and clinical posoperative recurrence, despite a numerical trend. Further prospective studies and larger cohorts are required to confirm these findings.

BackgroundPatients with pancreatic ductal adenocarcinoma face a poor prognosis, with radical resection being the only potential cure. Because symptoms typically appear late, many patients are diagnosed with advanced disease. Locally advanced pancreatic tumours are characterised by extensive vascular involvement, which precludes R0 resection. Systemic therapy is therefore indicated, not only for palliation but also for reducing the risk of metastatic disease. Locoregional control remains paramount, irrespective of distant metastases as progressive tumours can cause considerable morbidity, negatively affecting patients’ quality of life. Previous studies investigating conventionally fractionated (chemo)radiotherapy have yielded mixed results, indicating opportunities for further research to optimise treatment outcomes. The TORPEDO study aims to prospectively assess whether adding stereotactic body radiation therapy (SBRT) to standard chemotherapy can improve outcomes in patients with initially inoperable, non-metastasized pancreatic ductal adenocarcinoma.MethodsThis study is a multicentre randomised phase II trial. While it primarily targets locally advanced lesions, patients with borderline resectable tumours who are either medically inoperable or decline surgery are also eligible. After twelve weeks of induction chemotherapy (modified FOLFIRINOX or gemcitabine/nab-paclitaxel), patients without development of distant metastases are randomised 1:1 to receive either continued chemotherapy alone (arm A) or one month of chemotherapy followed by SBRT (5 × 8 Gy) (arm B). Resectability is evaluated through a multidisciplinary tumour board. The primary endpoint is the 2-year progression-free survival. Secondary endpoints include overall survival, local progression-free survival, metastasis-free survival, objective response rate, resectability, R0 resection rates, surgical morbidity, toxicity, quality of life, and the impact of radiation doses on outcomes.DiscussionWe evaluate the efficacy and safety of SBRT following induction chemotherapy in patients with inoperable, non-metastasized pancreatic ductal adenocarcinoma. We hypothesize that adding SBRT enhances outcome by improving local control and increasing overall survival. Effective control of the pancreatic primary tumor may help reduce pain and thereby improve quality of life.Trial registrationThe ethics committee of the GZA Hospitals approved this study on April 8, 2024. It was registered on ClinicalTrials.gov (NCT06691425) on November 15, 2024.

Breast cancer represents a significant burden of disease for women across the globe. Screening has been demonstrated to decrease breast cancer‐related mortality. However, many nations do not have population breast cancer screening programs, which are key to early detection and can decrease mortality rates. In 2024, the International Federation of Gynecology and Obstetrics (FIGO) established the Committee on Breast Health to raise awareness about breast disease, advocate for improved prevention and treatment, and promote best practices. This manuscript aims to review national policies in screening and early detection across 7 of the countries represented in the FIGO Committee on Breast Health: Chile, Germany, India, Mexico, the Philippines, Senegal, and the United States. Policies for population screening for breast cancer are reviewed and compared across countries, as well as efforts in risk stratification. A framework for addressing population screening for breast cancer is also proposed that acknowledges resource and infrastructure limitations across nations. These efforts represent a critical step in addressing breast cancer‐related mortality worldwide.

AimsDifferentiated or HPV‐independent vulvar intraepithelial neoplasia (dVIN) can progress rapidly to invasive cancer and accurate pathological diagnosis is essential to facilitate appropriate interventions. Histological similarities of dVIN with non‐neoplastic lesions, however, often make the diagnosis less reproducible. We investigated among a diverse group of pathologists whether the diagnostic agreement improves with the use of p53 immunohistochemistry (IHC) interpreted using the pattern‐based schema.Methods and resultsFifty haematoxylin–eosin (HE) stained archival slides (30 dVIN and 20 non‐dysplastic vulvar lesions) were selected and p53‐IHC was performed. Twenty‐four board‐certified pathologists from eight countries first assessed the HE slides alone, and after a washout period, re‐evaluated them alongside the p53‐IHC slides. During both rounds, slides were diagnosed as dVIN, favour dVIN, favour no‐VIN or no‐VIN. p53‐IHC was scored as wild‐type or mutant (diffuse, basal, cytoplasmic or null). Kappa (κ) statistics and McNemar's test were used for statistical analyses. Overall diagnostic agreement for dVIN saw a significant increase in the Kappa value (κ = 0.6 vs. κ = 0.4, P = 0.002) when HE and p53‐IHC slides were assessed together compared with histology assessment alone, although the level of agreement remained moderate. For p53‐IHC assessment, overall agreement was substantial (κ = 0.7). Diagnoses changing from no‐VIN/favour no‐VIN to dVIN correlated significantly with the identification of a p53‐mutant pattern (P < 0.001).ConclusionsOur findings indicate that p53‐IHC is a robust ancillary tool that can be reproducibly interpreted by pathologists with varying experience levels and supports the routine use of p53‐IHC in cases where dVIN is considered in the differential diagnosis.

BackgroundNeoadjuvant chemotherapy is used in borderline resectable (BR) and locally advanced (LA) pancreatic ductal adenocarcinoma (PDAC) to increase resection rate and improve cancer outcome. However, there is a need for better prediction of resectability. The aim of this prospective, single arm study is to improve prediction of surgical resection by using radiomics and liquid biopsy.MethodsIn this multicentric trial, 45 patients with BR or LA PADC will undergo neoadjuvant chemotherapy with FOLFIRINOX. An intention to treat analysis will be performed. The primary endpoint is the accuracy of the prediction of surgical resection. Secondary endpoints are overall survival and disease-free survival from the date of diagnosis, R0 and R1 resection rates, histopathological response, postoperative complications, patient reported outcomes with quality of life and health economic analysis. Translational research with multi-omics and radiomics based on computed tomography and magnetic resonance imaging aims to identify factors predictive of surgical resectability and survival. The primary hypothesis is that these strategies can increase the accuracy of predicting surgical resection.DiscussionImproved prediction of resectability is necessary in BR and LA PDAC. We aim to investigate whether a combination of clinical, radiological, and multi-omics profiling in liquid biopsies can successfully predict resectability and thus optimize the therapeutic decision tree.Trial registrationClinicalTrials.gov Identifier: NCT05298722. Date of registration: March 28, 2022.