RETROPERITONEAL FIBROSIS.
D000293:Adolescent; D002648:Child; D005853:Geriatrics; D010336:Pathology; D012185:Retroperitoneal Fibrosis; D012187:Retroperitoneal Space; D013514:Surgical Procedures, Operative; D014517:Ureteral Obstruction
ADOLESCENCE; CHILD; GERIATRICS; PATHOLOGY; RETROPERITONEAL FIBROSIS; RETROPERITONEAL SPACE; SURGERY, OPERATIVE; URETERAL OBSTRUCTION