Obstructed defecation caused by a cystourethrocele and mobile posterior vaginal wall: a case report.

Obstructed defecation may be caused by a rectocele and/or enterocele. Rectal wall procidentia may be due to an enterocele bulging into the rectum. Another cause of rectal procidentia resulting in obstructed defecation is presented. A 65-year-old woman complained of vaginal prolapse and incomplete bowel emptying. Pelvic examination revealed that a stage III anterior vaginal wall prolapse caused a mobile posterior vaginal wall to prolapse into the anal canal, resulting in rectal procidentia and subsequently in obstructed defecation. Careful assessment of all pelvic floor compartments is important to identify the cause of obstructed defecation, particularly in the absence of a rectocele.