[Syndrome of transverse testicular ectopia with persistent Müllerian vestiges or empty bursa with overfilled funiculus spermaticus].

Transverse parorchidium is characterized by the presence of two testes in the same bursa, and may be associated with persistent Müllerian vestige in the spermatic cord of the normally situated testis. Persistence of Müllerian vestige is related to inadequate production of anti-Müllerian hormone by the embryonal testis. Transverse parorchidium is caused by the emergence of both deferent ducts into the Müllerian vestige. Diagnosis is evoked by the presence of an empty bursa associated with an abnormally hard spermatic cord contralaterally. This syndrome should be known of surgeons, as ablation of the Müllerian vestige consecutive to surgical management of a hernia or ectopic testis may lead to the sectioning of the deferent ducts.