Bruce R, Alton D
Pediatr Radiol. 1986;16(1):79-81. doi: 10.1007/BF02387517.
The posterior channel of duplicated urethrae usually follows a straight course to end in the perineum just inside the anal verge. This unique urethra dipped into the perineum and then turned cephalad to enter the rectum above the anus. Delineation of the course of the urethra simplified management by assisting the urologist to convert the rectal passage to a hypospadiac urethra.