NARROWINGS OF THE MALE URETHRA CAUSED BY CONTRACTIONS OR SPASM OF THE BULBOCAVERNOSUS MUSCLE: CYSTO-URETHROGRAPHIC OBSERVATIONS

Abstract
Contractions or spasm of the bulbocavernosus muscle may produce a localized narrowing of the bulbous urethra in the voiding urethrogram which may have to be differentiated from a stricture. The phenomenon may occur as a transient event in otherwise normal individuals, or as a persistent manifestation of neurogenic bladder.

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