Enterocele is defined by the herniation of which structure into the upper vagina?

Enterocele is defined by the herniation of which structure into the upper vagina?

• A. Omentum
• B. Small bowel (Pouch of Douglas)
• C. Ureter
• D. Appendix

Answer: (B)

This question focuses on pelvic organ prolapse types. An enterocele occurs when the peritoneal sac that normally lines the rectouterine pouch (pouch of Douglas) descends and protrudes into the vaginal canal, specifically the upper portion of the vagina. In practical terms, small bowel (often with peritoneum) herniates through the posterior vaginal fornix due to weakness of the pelvic support structures, commonly after childbirth or surgery like a hysterectomy. That’s why the small bowel through the pouch of Douglas is the classic description of an enterocele. The other structures listed don’t typically form an enterocele: the omentum can herniate in various abdominal defects but isn’t the characteristic content of an enterocele; the ureter and the appendix aren’t usually involved in vaginal herniation.

This question focuses on pelvic organ prolapse types. An enterocele occurs when the peritoneal sac that normally lines the rectouterine pouch (pouch of Douglas) descends and protrudes into the vaginal canal, specifically the upper portion of the vagina. In practical terms, small bowel (often with peritoneum) herniates through the posterior vaginal fornix due to weakness of the pelvic support structures, commonly after childbirth or surgery like a hysterectomy. That’s why the small bowel through the pouch of Douglas is the classic description of an enterocele.

The other structures listed don’t typically form an enterocele: the omentum can herniate in various abdominal defects but isn’t the characteristic content of an enterocele; the ureter and the appendix aren’t usually involved in vaginal herniation.