title: Congenital giant hydroureteronephrosis.
abstract: Four patients with giant hydroureteronephrosis are reported to emphasize the massive proportions attained by a dilated ureter. Ureteral obstruction was congenital in each case; duplication with ectopic insertion was present in three of the four patients. In three patients the massively dilated ureter caused partial obstruction of the contralateral ureter. If ultrasound and/or computed tomography demonstrate a huge, septate, cystic structure crossing the midline, massive megaureter should be suspected. Antegrade puncture can be used to confirm the diagnosis.
mesh_terms: D000328:Adult; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D006869:Hydronephrosis / Q000151:congenital* / Q000175:diagnosis / Q000000981:diagnostic imaging; D007223:Infant; D008297:Male; D011859:Radiography; D014515:Ureteral Diseases / Q000151:congenital* / Q000175:diagnosis / Q000000981:diagnostic imaging; D014517:Ureteral Obstruction / Q000150:complications / Q000151:congenital / Q000000981:diagnostic imaging