Enterovesical fistula due to non-Hodgkin lymphoma in AIDS.

Enterovesical fistula associated with lymphoma is exceedingly rare. We report three patients with the acquired immunodeficiency syndrome who presented with fecaluria and pneumaturia. Non-Hodgkin lymphomas involving the intestine and the urinary bladder creating an enterovesical fistula were found at surgery in two patients and at autopsy in the third. Extranodal lymphomas are becoming more common in AIDS patients, so that the possibility of lymphoma should be considered in the differential diagnosis of enterovesical fistulas in these patients.