A Case of Giant Hydronephrosis Extruding Contralaterally

Hajime Kawakami, Teruyoshi Amagai, Toshihiro Yanai, Misako Hirai, Takeshi Mouri
Department of Pediatric Surgery, Ibaraki Children's Hospital

Abstract
We have often observed often hydronephrosis with pyeloureteric junction obstruction（PUJO）in children. In this case, a 1-year-old boy had giant left hydronephrosis which extruded up to the right side. He had abdominal distension, but no abdominal or back pain, no vomiting, no appetite loss, and no hematuria. The giant hydronephrosis was found incidentally on admission for examination. Ultrasonography showed a giant cystic lesion of the whole abdomen, but the origin was not detected on admission. Abdominal CT showed massive left hydronephrosis.

Keywords： Giant hydronephrosis, Pyeloureteric junction obstruction (PUJO), Abdominal CT, Abdominal US