Two Cases of Ectopic Ureter Opening into the Ejaculatory Duct: Double Vas Deferens Revisited

Abstract
We report 2 rare cases of single ectopic ureter simulating double vas deferens. Clinical, radiographic and macroscopic signs at operation indicated a single ectopic ureter opening into the seminal tract. However, histological examination of the surgical specimen revealed that the lumen of the supposed ureter was lined in part by columnar epithelium, although chiefly by transitional epithelium. The wall of the ureter contained 3 well defined muscular coats in case 1 but only 1 layer was distinguishable in case 2. Histological composition of the structure removed from the cranial site resembled that of the epididymis.