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Pelvic floor musculature and bladder neck changes before and after continence recovery after radical prostatectomy in pelvic MRI
Author(s) -
Sohn Dong Wan,
Hong Chan Kyu,
Chung Dong Jin,
Kim Sun Ho,
Kim Soo Jin,
Chung Jinsoo,
Joung Jae Young,
Lee Kang Hyun,
Seo Ho Kyung
Publication year - 2014
Publication title -
journal of magnetic resonance imaging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.563
H-Index - 160
eISSN - 1522-2586
pISSN - 1053-1807
DOI - 10.1002/jmri.24299
Subject(s) - medicine , neck of urinary bladder , urology , pelvic floor , urinary continence , prostatectomy , urethra , prostate , urinary incontinence , prostate cancer , surgery , urinary bladder , cancer
Purpose To evaluate the changes in pelvic floor anatomy using MRI before and after continence recovery after radical prostatectomy (RP). Materials and Methods Thirteen men with prostate cancer who underwent RP (mean age, 67.4 ± 8.8 years) volunteered for this study. Prostate MRIs were performed during the preoperative (i), incontinent (ii), and continent (iii) periods. The membranous urethra length (MUL), puborectalis muscle (PRM) thickness, and the position of the bladder neck in relation to the pubic bone (Dx) and the pubococcygeous line (Dy) were measured. We compared all parameters in the preoperative, incontinent, and continent periods. Results MUL2 and MUL3 was significantly longer compared with MUL1, although no difference was found between MUL2 and MUL3. PRM3 thickness was significantly increased compared with PRM2 thickness. The Dx of the continence period was shorter than that of the incontinence period. The Dy of the continence period was longer than that of the incontinence period. Conclusion The PRM thickened and the bladder neck moved upward and forward during the continence period. The changes in PRM thickness and the position of bladder neck may play an important role in the recovery of continence after RP. J. Magn. Reson. Imaging 2014;39:1431–1435 . © 2013 Wiley Periodicals, Inc.