Colitis due to Ancylostoma duodenale.

The larva of hookworm matures into the adult stage in the small intestine, causing chronic intestinal blood loss and iron-deficiency anemia. Hookworm infestation of colon has not been reported previously. We report a 35-year-old man who presented with diarrhea with blood and mucus in stools. Colonoscopy revealed several hookworms in the colon firmly adherent to the mucosa, with oozing of blood and surrounding mucosal erosions. He was treated with mebendazole and symptoms recovered completely.

Severe colitis induced by soap enemas.

Soap enemas causing severe colitis with stricture and complications have rarely been reported. We report three patients in whom soapsud enema caused severe colitis and complications like stricture requiring surgery.

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.