Pelvic magnetic resonance imaging parameters predict urinary incontinence after robot‐assisted radical prostatectomy

Objective Urinary incontinence (UI) is a major prostate cancer (PCa) treatment‐related morbidity. It has been reported that post‐prostatectomy UI is related to the width of the pelvic floor muscles (PFM) and the length of the urethra. However, the details of these anatomical parameters are unknown....

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Bibliographic Details
Published in:Lower urinary tract symptoms 2019-05, Vol.11 (3), p.122-126
Main Authors: Sadahira, Takuya, Mitsui, Yosuke, Araki, Motoo, Maruyama, Yuki, Wada, Koichiro, Edamura, Kohei, Kobayashi, Yasuyuki, Watanabe, Masami, Watanabe, Toyohiko, Nasu, Yasutomo
Format: Article
Language:English
Subjects:
Aged
Cancer surgery
computer‐assisted surgery
Humans
incontinence
Magnetic Resonance Imaging
magnetic resonance imaging (MRI)
Male
Middle Aged
NMR
Nuclear magnetic resonance
Pelvic Floor - anatomy & histology
Pelvic Floor - diagnostic imaging
Predictive Value of Tests
Prostate
Prostate cancer
prostatectomy
Prostatectomy - adverse effects
Retrospective Studies
Robotic Surgical Procedures - adverse effects
Urethra - anatomy & histology
Urethra - diagnostic imaging
Urinary incontinence
Urinary Incontinence - etiology
Urological surgery
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Summary:Objective Urinary incontinence (UI) is a major prostate cancer (PCa) treatment‐related morbidity. It has been reported that post‐prostatectomy UI is related to the width of the pelvic floor muscles (PFM) and the length of the urethra. However, the details of these anatomical parameters are unknown. The aim of this study was to investigate whether preoperative pelvic parameters or anatomical parameters of the urethra, as measured by magnetic resonance imaging (MRI), are correlated with UI. Methods Between 2010 and 2017, 571 patients with localized PCa underwent robot‐assisted radical prostatectomy (RARP) at Okayama University Hospital. Patients treated by a single experienced surgeon were included in the study. Preoperative prostate volume, obturator internal muscle, anal sphincter muscle, levator ani muscle (LAM), urethra wall thickness (UWT), and membranous urethral length (MUL) were measured by MRI. Patients were divided into two groups depending on leakage status 1 year after RARP using Expanded Prostate Index Composite Item 1. Results Seventy patients were included in this retrospective study. Based on leakage status, 37 and 33 patients were allocated to the no‐leakage and leakage groups, respectively. There were significant differences between the two groups in age (P = 0.03), MUL (P 
ISSN:1757-5664
1757-5672
DOI:10.1111/luts.12245