Small Intestinal Carcinoma

Initial chemotherapy with FOLFOX (oxaliplatin, fluorouracil, and folinic acid) was initiated; however, a microsatellite instability-high (MSI-H) status was identified, and the treatment was promptly switched to pembrolizumab. Additionally, a brief meta-analysis of 10 studies comprising 72 patients with MSI-H/mismatch repair-deficient SBA revealed an objective response rate to immune checkpoint inhibitors of 65.3%. This case highlights the potential of pembrolizumab for the curative resection of an initially unresectable MSI-H SBA.

P2, N=78, Recruiting, Masonic Cancer Center, University of Minnesota | Trial completion date: Jan 2026 --> Jan 2028 | Trial primary completion date: Jan 2026 --> Jan 2027

Although extremely rare, the possibility of isolated duodenal recurrence after surgery for colon cancer exists. With a brief review of the literature, we report here a rare recurrence case of transverse colon cancer which was discovered at 6 years postoperatively and resulted in curative resection.

Encorafenib, cetuximab, and binimetinib are targeted therapies developed for metastatic colorectal cancer with a BRAF V600E mutation. The case highlights the potential use of BRAF V600E targeted therapy in BRAF V600E-mutated duodenal cancer and the importance of molecular profiling in rare cancers. Further research is needed on the effect and safety of targeted therapy for small bowel adenocarcinoma.

Extended, risk-adapted surveillance may be reasonable for small-bowel GISTs, and it may be beneficial to incorporate Ki-67 (≥5%) into site-based risk stratification. These observations remain hypothesis-generating and require validation in larger, multicenter cohorts and prospective studies.

P=N/A, N=90, Recruiting, Minia University | Not yet recruiting --> Recruiting

She required intensive care with vasopressors and mechanical ventilation and was treated for cytomegalovirus viremia with intravenous ganciclovir followed by valganciclovir. Primary intestinal lymphoma can mimic IC through obstruction and microvascular compromise. Early recognition of atypical right-sided IC is essential, as prompt surgery and biopsy can identify underlying malignancy and guide timely oncologic management.

P2, N=27, Recruiting, National Cancer Center, Japan

P=N/A, N=90, Not yet recruiting, Minia University

In the present manuscript, we provide a subsequent long-term follow-up report of the same patient, offering an extended 88-month postoperative course and additional radiologic and pathologic details not included in the earlier publication. This follow-up report highlights the long-term benign behavior of the tumor despite positive surgical margins and anaplastic lymphoma kinase (ALK)-negative immunohistochemistry, contributing meaningful information to the scarce literature on adult duodenal IMTs.

NEN tumors are highly vascularized and consistently positive for CD31. Despite reports that CD31/PACAM1 is important to cell adhesion and tumor phenotype, there was no identifiable measurable impact of high CD31 levels on NEN. Nor was there a prognostic clinical value for CD31 staining quantification.

Management of FAP is complex, and patients require frequent and lifelong surveillance. This review will discuss the current understanding and clinical management of FAP as well as innovations and challenges in clinical practice.