Strongyloidiasis presenting as duodenal obstruction.

Small bowel obstruction due to Strongyloides stercoralis is rare especially in immunocompetent individuals. We report a case of a 45-year-old man who presented with a history of severe abdominal pain, intermittent low-grade fever and vomiting. An upper GI endoscopy revealed a diffusely edematous second portion of duodenum and narrowing in the third part of duodenum with food residue in the stomach. Barium contrast upper-GI radiography revealed partial small-bowel obstruction. Duodenal biopsy specimens revealed Strongyloides stercoralis in the submucosa with inflammatory infiltrate. The patient was treated with ivermectin and had complete resolution of symptoms.