case_images: PMC11000829_01
case_images: CT abdomen and pelvis without contrast showing an area of intussusception (circle) within the mid to distal small bowel.
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case_images: CT abdomen with intravenous contrast revealed obstructing intussusception of the distal ileum, proximal to the terminus (Fig. 1).
case_images: (A) Low power (20X) hematoxylin and eosin (H&E) image showing an atypical lymphoid infiltrate involving the small bowel mucosa, submucosa, and muscularis propria. (B) On higher power (100X), the atypical infiltrate consists of large lymphoid cells with prominent nucleoli and increased mitotic activity, morphologically consistent with diffuse large B cell lymphoma (DLBCL, left side). Normal small bowel villi are present on the right side for comparison.
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case_images: f2-jchim-13-06-001
case_images: Surgical pathology of the small bowel resection revealed stage IIIE, CD20 positive atypical lymphoid infiltrates involving the small bowel mucosa, submucosa, and muscularis propria, comprising of large lymphoid cells with prominent nucleoli and increased mitotic activity, consistent with diffuse large B cell lymphoma (Fig. 2).
case_images: PET CT showing clustered hypermetabolic level 1B left perimandibular nodes (arrow) consistent with a localized lymphoproliferative disorder or benign reactive nodal change (A), and a nonspecific hypermetabolic right axillary lymph node indicated by the arrow (B).
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case_images: f3-jchim-13-06-001
case_images: PET scan indicated clustered hypermetabolic level 1B left perimandibular nodes in addition to hypermetabolic right axillary lymph nodes (Fig. 3).