title: Neuroblastoma masquerading as congenital ureteropelvic junction obstruction.
abstract: A case of perirenal neuroblastoma causing intrarenal obstruction of the pelvis of the kidney presented as a small hydronephrosis at 3 days of age. The tumor grew rapidly over the next 48 hr, diagnosis was confirmed by ultrasonography, and the mass was removed surgically.
mesh_terms: D003937:Diagnosis, Differential; D006801:Humans; D006869:Hydronephrosis / Q000175:diagnosis; D007231:Infant, Newborn; D007674:Kidney Diseases / Q000151:congenital / Q000175:diagnosis / Q000000981:diagnostic imaging; D007680:Kidney Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging; D007682:Kidney Pelvis / Q000000981:diagnostic imaging; D008297:Male; D009447:Neuroblastoma / Q000175:diagnosis* / Q000000981:diagnostic imaging; D011859:Radiography; D014463:Ultrasonography; D014517:Ureteral Obstruction / Q000151:congenital* / Q000175:diagnosis / Q000000981:diagnostic imaging