Crossed testicular ectopia with bilateral duplication of the vasa deferentia: an unusual finding in cryptorchism.

A very unusual association of crossed testicular ectopia, with bilaterally duplicated vasa deferentia, was encountered in an otherwise normal 10-year-old boy who presented with bilateral cryptorchism. The left testis was palpable in the groin; the right was nonpalpable. Because of ductal fusion, both testes were brought down on the same side to avoid damage during separation, with placement of the testes in either hemiscrotum through a transseptal incision.