Analyzing Cystography Parameters to Predict Urinary Continence Recovery Following Prostate Cancer Surgery

By Robert Dillard - July 22, 2022

A study sought to assess whether postoperative cystography findings can predict early and long-term recovery from incontinence after radical prostatectomy (RP) in prostate cancer patients, compared with the other cystography parameters. The findings were reported in the Journal of Yeungnam Medical Science.

In this study, Yeong Uk Kim retrospectively reviewed 118 patients who underwent robot-assisted RP (RARP) for localized prostate cancer at one hospital between January 2016 and April 2021. The final analysis included 107 patients. Kim analyzed bladder neck to pubic symphysis ratio, vesicourethral angle, and bladder neck anteroposterior length (BNAP) ratio (the bladder neck-posterior margin distances, while analyzing these variables and urinary incontinence.

The results of ultivariate logistic regression analysis demonstrated that a lower BNAP ratio and wider vesicourethral angle were markedly linked with continence restoration post-surgery. Moreover, with respect to pad usage, lower BNAP ratio, wider vesicourethral angle, and bladder neck preservation were significantly associated with recovery from urinary incontinence within 12 months.

“This study demonstrated that vesicourethral angle and BNAP ratio were independent predictors of early recovery from post-prostatectomy incontinence. I suggest that both the sagittal and coronal views of postoperative cystography help anticipate early continence restoration after RARP,” Kim concluded.