Hossein Emad Momtaz
1* 
, Paria Abbasian
11 Pediatric Department, Besat Hospital, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
Abstract
Renal arteriovenous malformation (AVM) is a rare cause of gross hematuria in children and adolescents that may present so acute and severe hematuria, leading to significant anemia in patients. We present a 14-year old girl with acute massive gross hematuria with no history of trauma or coagulation defect. Although AVM not common, it should be included in the differential diagnosis of gross hematuria in children and adolescents.