pouch of Douglas
The deepest part of the peritoneal cavity in females, located between the uterus and rectum.
Full Definition
The pouch of Douglas, also known as the rectouterine pouch or rectovesical pouch, is the most dependent portion of the peritoneal cavity in the female pelvis. This anatomical space lies between the posterior wall of the uterus and the anterior surface of the rectum, extending downward to the posterior vaginal fornix. It is a common site for fluid collection, endometriosis implants, and pelvic infections. The pouch can be accessed surgically through culdocentesis or posterior colpotomy for diagnostic or therapeutic purposes. In cases of pelvic organ prolapse, herniation of bowel through this space can create an enterocele.
Usage
Usage note: Named anatomical structure; also called cul-de-sac in clinical practice.
In Context
- "Free fluid was noted in the pouch of Douglas on transvaginal ultrasound." — Radiology report
- "Laparoscopy revealed extensive endometriosis deposits in the pouch of Douglas." — Operative findings