1 The Urologic Service and Pediatrics Section, Harbor General Hospital, Torrance, California; the Urology Section, Wadsworth Veterans Administration Hospital, Los Angeles, California; and the Division of Urology, University of California Medical Center, Los Angeles, California
The first case of juvenile idiopathic retroperitoneal fibrosis is reported. The disease is a well-recognized entity characterized by nonspecific retroperitoneal inflammation and fibrosis of unknown etiology. Fibrotic involvement of the ureters frequently leads to hydronephrosis.