Spontaneously ruptured multilocular cystic nephroma in an infant.

We present the case of a 10-month-old girl with spontaneously ruptured cystic nephroma with a 1-week-old abdominal mass and a 1-day history of marked abdominal distension. The tumor presented as gourd-shaped, cystic solid mass in the right kidney with fluid collection. The tumor was successfully removed by urgent surgery. The girl remained in good condition throughout six-month follow-up after.