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Open AccessArticle

Preoperative MRI Parameters Predict Urinary Continence after Robot-Assisted Laparoscopic Prostatectomy in Prostatic Cancer Patients

Department of Urology, Nara Prefecture General Medical Center, 897-5, Shichijo-nishi machi 2 chome, Nara 630-8581, Japan
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Diagnostics 2019, 9(3), 102; https://doi.org/10.3390/diagnostics9030102
Received: 5 August 2019 / Revised: 19 August 2019 / Accepted: 21 August 2019 / Published: 25 August 2019
(This article belongs to the Special Issue Urogenital Cancers: Diagnostic, Predictive, and Prognostic Markers)
We aimed to investigate whether preoperative MRI findings could predict the bladder neck location on postoperative cystography and recovery of urinary incontinence after robot-assisted laparoscopic radical prostatectomy (RALP). We retrospectively reviewed 270 consecutive patients who had complete preoperative data, including MRI, and underwent postoperative observation for more than three months. Preoperative MRI parameters consisted of the membranous urethral length (MUL) and pubic symphysis-prostate apex length (PAL) on sagittal images. The bladder neck location on a postoperative cystography was defined as the lowest extension of the tapering contrast medium in the bladder, and its relation to the pubic symphysis (above (higher group) and below (lower group) the middle of the pubic symphysis height) was evaluated. Those who required no pad or a safety pad were defined as being continent. PAL was significantly shorter in the higher group than that in the lower group (25.5 vs. 29.1 mm; p < 0.0001). The continent group at three months had a significantly longer MUL and shorter PAL than those in the incontinent group (8.1 vs. 6.7 mm; p < 0.05, and 26.0 vs. 28.1 mm; p < 0.05, respectively). Preoperative MRI parameters could predict the bladder neck location on postoperative cystograms and the recovery of urinary incontinence after RALP. View Full-Text
Keywords: bladder neck; magnetic resonance imaging; membranous urethral length; prostatectomy; urinary incontinence bladder neck; magnetic resonance imaging; membranous urethral length; prostatectomy; urinary incontinence
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Fukui, S.; Kagebayashi, Y.; Iemura, Y.; Matsumura, Y.; Samma, S. Preoperative MRI Parameters Predict Urinary Continence after Robot-Assisted Laparoscopic Prostatectomy in Prostatic Cancer Patients. Diagnostics 2019, 9, 102.

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