MATURE TERATOMA ARISING FROM AN INTRAABDOMINAL UNDESCENDED TESTIS PRESENTING AS A FETAL ABDOMINAL-MASS

Teratoma of the intra-abdominal testis is a rare finding in infants. W e describe the case of a full-term newborn treated for a calcified abd ominal mass which was observed unexpectedly on prenatal sonography. An undescended right testis was also noted. During laparotomy, a twisted retroperitoneal tumor was found just above the light deep inguinal ri ng. Histological analysis revealed a mature teratoma of the intra-abdo minal light testis. The tumor runs removed and there was no recurrence at follow-up 1 year later. A teratoma should be considered in cases o f fetal abdominal mass, especially when the testes cannot he detected in the scrotum by the 8th month. Prenatal sonographic diagnosis might be possible.