Unilateral Multicystic Kidneyの1例とその考察

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A case of congenital unilateral multicystic kidney in a 4 years old boy is reported. He was admitted as an emergency patient suffering from abdominal pain and abdominal tumor. Routine physical examination revealed the presence of an about fist-sized cystic tumor in the left upper abdomen. Routine laboratory ekaminations were all negative, but intravenous pyelogram showed a normal right and non-functioning left kidney. Subcutaneous pyelogram, tried under suspicion of hydronephrosis, disclosed successfully the presence of a cystic tumor mass composed of four, various sized cysts in the left abdomen. Complete resection of this cystic tumor was performed under suspicion of unilateral multicystic kidney from the alove findings. Surgical specimen had the appearance of a cluster of grapesand was composed of seven cysts of varioussized which were held together by loose connective tissue, but macroscopically there was neither ureter, nor any discernible renal parenchama. However, on close investigation, both irregularly dilated pelvis like canal and over bean sized, solid renal tissue were detected near the hilar region of this cystic tumor.
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