Urethral ectopic ureters without incontinence are exceedingly rare; so far as we know, no case has been previously reported in a man. In a recent review of the literature, Davis1 could find only five reports of this anomaly, to which he added a sixth; all were in women. Two of these were diagnosed at necropsy (probably the two reports were of the same case), two at operation and two by cystoscopy and pyelography.
In all but one of these cases of urethral ectopic ureters there were a normal kidney and a single ureter on one side, with a normally placed ureteral opening in the bladder and double ureters from a double kidney on the other. In Hunner's2 case there was a single kidney on each side, with one normal ureteral opening at the usual site; the other ureter opened into the urethra. In practically all cases of ectopic
BALLENGER EG, ELDER OF, McDONALD HP. URETHRAL ECTOPIC URETER FROM HYDRONEPHROTIC HALF OF DOUBLE KIDNEY. JAMA. 1930;95(4):257-259. doi:10.1001/jama.1930.02720040015005