title: Ureteropelvic obstruction in adults with previously normal pyelograms: a report of 5 cases.
mesh_terms: D000328:Adult; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D006869:Hydronephrosis / Q000000981:diagnostic imaging / Q000209:etiology; D007682:Kidney Pelvis / Q000002:abnormalities; D008297:Male; D008875:Middle Aged; D010146:Pain; D014517:Ureteral Obstruction / Q000000981:diagnostic imaging / Q000209:etiology*; D014567:Urography