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[Transrectal echographic micturitional evaluation of bladder neck pathology].

Dynamic transrectal echography is the primary method to evaluate bladder neck diseases during micturition for its safety, noninvasiveness and excellent imaging. In order to find some features for every kind of disease, we have examined 32 patients with BPH, Carcinoma, Marion disease and also evaluated the morphological images after prostate surgery. Enlargement of the prostate gland may restrict the urethral lumen and deviate its intra-prostate way, such that the urethra can't be allocated in one sagittal echographic plane. The third lobe, when it exists, can act like a valve against the urine flow. Prostate carcinoma, at first, can be asymptomatic on urodynamic study. Urethral invasion and its organic stenosis is shown by a very thin, longer and irregular profiles. Bladder neck sclerosis is an unusual disease, but its diagnosis can be easy if a posterior "beak" at internal meatus level, urethral dilatation after stenosis and positive Stop-Test exist. After surgery, one can observe full relaxation of the internal sphincter and the voluntary skeletal sphincter, located at the level of the membranous urethra, providing itself a continence mechanism.