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A REVIEW OF UROLOGIC SURGERY

ALBERT J. SCHOLL, M.D.; E. STARR JUDD, M.D.; JEAN VERBRUGGE, M.D.; ALEXANDER B. HEPLER, M.D.; ROBERT GUTIERREZ, M.D.; VINCENT J. O'CONOR, M.D.
Arch Surg. 1936;32(4):730-746. doi:10.1001/archsurg.1936.01180220156010.
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URETHRA 

Valves.  —Counseller and Menville49 stated that congenital valves of the posterior portion of the urethra obstruct the flow of urine and by backward pressure produce renal damage which seriously endangers the life of the patient. Anatomically, the valves may be represented by ridges, mucosal folds or fibrous diaphragms covered by mucosa, and the varieties fall into one or more of three types. In type 1, a ridge which divides into two forklike processes is continuous with the verumontanum anteriorly on the floor of the urethra. These processes are thin membranous sheets which extend upward and forward and which may be attached to the urethra through its circumference. In this group is included the nonbifurcated or single type of valve. In type 2 the ridge extends from the verumontanum toward the bladder and divides, similarly to those in type 1, that is, distal to the internal sphincter. Type 3

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