A 67 year-old Caucasian male from Arizona presented with indolent symptoms of intestinal obstruction and hydronephrosis, found at surgery to be caused by a mass involving the terminal ileum and cecum, extending into the posterior abdominal wall and obstructing the right ureter. Histopathology was diagnostic of basidiobolomycosis. PCR of tissue and sequencing identified the fungus as, Basidiobolus ranarum. During one year of posaconazole treatment, the residual mass shrank, hydronephrosis was relieved and peripheral eosinophilia resolved.
Keywords: Basidiobolomycosis; Posaconazole.