Crossed testicular ectopia with fused bilateral duplication of the vasa deferential: an unusual finding in cryptochidism.

A case of a one year and ten month old boy with crossed testicular ectopia, fused vasa deferentia, and common processus vaginalis containing both testes is reported. This is the first case of transverse testicular ectopia we have come across since 1978. Diagnosis was made on the operation table as the child came for repair of right inguinal hernia. Right testis was palpable in the groin; the left testis was not palpable anywhere along the pathway of descent. Because of ductal fusion, both testes were brought down on the right side to avoid damage during separation and placed in either hemiscrotum through transceptal window.