A rare anomaly of testicular descend: transverse testicular ectopia and review of the literature.

Crossed ectopia or transverse testicular ectopia (TTE) is an extremely rare anomaly of testicular descent in which both gonads migrate along the same inguinal canal to the hemiscrotum. Fewer than 100 cases have been reported in the literature. Most cases of TTE involve a concomitant inguinal hernia on the contralateral side. A radiological evaluation and laparoscopy are essential for appropriate diagnosis and treatment. Although a correct diagnosis is not preoperatively made in most cases, we present a 15-year-old boy in whom TTE was diagnosed by magnetic resonance imaging. A laparoscopic evaluation and treatment (orchiectomy) was uneventfully performed.