Abstract

Congenital pelvic arteriovenous malformation is a rare disease that is usually asymptomatic. Pelvic arteriovenous malformations are often acquired lesions secondary to neoplasms, pelvic trauma or surgical procedures. In this paper, we present a case of spontaneous massive hematuria due to congenital pelvic arteriovenous malformation in a 72-year-old woman. At the time of admission, the patient's hemoglobin and hematocrit values had fallen to 7.2 g/dL and 22%, respectively. First, blood transfusion was done and cystoscopic evaluation was performed after hematoma in bladder was drained.  At the cystoscopy, a pulsatile movement and erythematous areas were observed in the base of the bladder. Subsequently, vascular lesions in the pelvic cavity were detected by computed tomography and angiography was performed for definitive diagnosis and treatment of the patient.

Key Words: Arteriovenous Malformations; Hematuria; Urinary Bladder.