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Pelvic Floor Anatomical Variations in Children With Exstrophy-Epispadias Complex Using Magnetic Resonance Imaging.

Authors:
Zhiwei Peng Yichen Huang Wenjuan Tang Yang Shen Yan Chen Hua Xie Yiqing Lyu Yuchun Wu Fang Chen

Urology 2022 Jan 15. Epub 2022 Jan 15.

Department of Urology, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai, China.

Objective: To quantitatively measure the anatomical variations of the pelvic floor in children with exstrophy-epispadias complex using magnetic resonance imaging.

Materials And Methods: Six cases of classic bladder exstrophy (CBE), 5 cases of penile epispadias (PE) and 11 cases of penopubic epispadias (PPE) were included. Another 8 cases with the testicular tumor were taken as the controls. A series of measurements obtained from the pelvic floor magnetic resonance imaging were analyzed, and the measurements with significant differences were obtained by ANOVA.

Results: The pelvic floor of the CBE was significantly different from that of controls in measurements including wider pubic diastasis (P <.001), greater posterior anal distance (P = .019), greater posterior bladder neck distance (P = .004), larger iliac wing angle (P <.001), diminutive ischial angle (P <.001), bigger puborectalis angle (P <.001), larger ileococcygeous angle (P = .002) and shortened anterior corporal length (P <.001). For the PE, the posterior bladder neck distance (P = .038) was greater than that of controls. In the PPE, the posterior bladder neck distance (P = .001) and puborectalis angle (P = .026) was greater than that of controls, respectively.

Conclusion: CBE shows severe anatomical variations of the pelvic floor. The bladder neck moves more anteriorly both in PE and PPE than the control. The enlarged puborectalis angle resulting from wider pubic diastasis and more anterior position of the anorectal canal is also noticed in PPE.

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http://dx.doi.org/10.1016/j.urology.2022.01.008DOI Listing
January 2022

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