[Renal cirsoid aneurysm (congenital arteriovenous fistula): a rare cause of severe hematuria].

Objective: Congenital arteriovenous fistulas are an exceptional clinical feature. Although they are frequently asymptomatic, their presentation as severe hematuria pose an excellent diagnostic exercise and often immediate therapeutic action.

Methods/results: We report the case of a 75-year-old female patient presenting with severe hematuria producing anaemia, high blood pressure and congestive heart failure.

[Concurrent tumors in a patient with giant hydronephrosis].

Objectives: Giant hydronephrosis, defined as the presence of a liquid volume over 1000 ml within the urinary collector system, is a rare clinical entity, the diagnosis of which is an excellent exercise because it lacks of a defined clinical presentation.

Methods/results: We report the case of a 66-year-old male under study for a suspicious digestive tumor due to a long lasting clinical picture with severe cachexia, asthenia, anemia, constipation, and abdominal mass. Radiological tests showed a great right hydronephrosis secondary to a culculus in the ureteral-pelvic junction.