PMC5496583_01
Video capsule endoscopy demonstrating multiple areas of ulceration within the small bowel.
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F1
He underwent video capsule endoscopy, which revealed areas of ulceration with heaped up mucosa and active bleeding in the small bowel (Figure 1).
Small bowel enteroscopy showing a deep, cratered ulcer with an adherent clot in the distal duodenum.
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F2
Subsequently, a small bowel enteroscopy with a pediatric colonoscope revealed a large cratered ulcer with an adherent clot in the distal duodenum, surrounded by edematous and irregular mucosa (Figure 2).
(A) High-power field of small bowel biopsies demonstrating numerous atypical plasma cells with irregular nuclear contours and prominent nucleoli. (B) Diffuse staining for kappa light chain in the plasma cells of the lamina propria, consistent with a clonal process.
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F3
Biopsies of the ulcer edge revealed monomorphic posttransplant lymphoproliferative disorder (PTLD), plasmacytoma-like (Figure 3).