Therapy of pessary-induced rectovaginal fistula and pelvic organ prolapse in elderly patients by vaginal approach and modified LeFort colpocleisis: a case series

Archives of Gynecology and Obstetrics(2020)

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Abstract
Purpose Pelvic organ prolapse (POP) presents a common benign condition in women associated with reduced quality of life (QoL). The use of pessaries is considered a first-line treatment of POP. However, pessaries can cause perforations into adjacent organs resulting in fistulas. We present a series of three cases of rectovaginal fistulas (RVF) due to pessary perforation. Methods Three consecutive cases of pessary-induced RVF in patients with POP stage IV were assessed between September 2016 and September 2019. Consensus for therapeutic strategy was reached by an interdisciplinary board. Results The RVF were located in the posterior vaginal wall and had a diameter of up to 60 mm. In one of three patients, a two-step approach was chosen with the ostomy being performed at the same time as fistula closure and modified LeFort colpocleisis. It was followed by ostomy closure 3 months later. In two patients, a three-step approach was chosen with the ostomy performed separately due to a local tissue inflammation around RVF. Neither fistula nor POP recurrences have occurred so far. Conclusion Combined temporary gastrointestinal diversion, RVF closure and POP therapy can be performed as a two- or three-stage approach. Lack of evidence and standardized algorithms in RVF therapy make further clinical studies essential. We encourage the preoperative assessment of any case of complex rectovaginal fistula by an interdisciplinary board for determining an individualized treatment.
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Key words
Pelvic organ prolapse, Pessary therapy, Rectovaginal fistula, Colpocleisis, Prolapse therapy
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