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Small Bowel Masses

Audience: Residents and Fellows Learning Objectives: Identify and describe common patterns of small bowel neoplasia Differentiate small bowel neoplasia from patterns of small inflammation or ischemia Summary: Adenocarcinoma – Irregular, solid circumferential enhancement, luminal narrowing. Most common in the duodenum - jejunum Submusocal masses- Endophytic or exophytic round enhancing masses most commonly carcinoid or GIST Serosal metastases - multifocal masses associated with ascites, which can advance to obstruction Lymphoma – Primary is associated with HIV, Celiac, and solid organ transplants, segmental enhancing mass with pseudoanuerysmal dilation