Double Trouble: Leishmaniasis and Cytomegalovirus Colitis in an Immunocompromised Host.

Leishmaniasis is endemic in several areas of the world. It is a chronic protozoan disease transmitted through the bite of the Phlebotomus fly. Unusual localizations of visceral leishmaniasis are extremely rare and are described in immunocompromised patients. We present a case of a 73-year-old man, postliving nonrelated kidney transplant who complained of melena, fatigue, and weight loss. Gastroscopy showed a large ulcer at the lesser curvature of the stomach, and biopsies demonstrated severe ulceration with superimposed fungal organisms. Colonoscopy showed a polyp in the transverse colon, and histopathological examination revealed cytomegalovirus colitis with superimposed leishmaniasis.