European journal of pediatrics
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Case Reports
Mature teratoma arising from intra-abdominal contralateral undescended testis in an infant: a case report.
A 4-month-old male infant was seen because of an asymptomatic undescended left testis and a right sided abdominal mass. CT revealed a calcified retroperitoneal tumour. Histological examination of surgical specimens showed a mature primary teratoma of the contralateral undescended testis. While this is very rare, infants with undescended testis should be carefully examined to rule out intra-abdominal malignant tumours.