How Is Rectovesical Pouch Formed?

Bowel. The sigmoid colon is on a mesentery, while the rectum is retroperitoneal. The anterior surface of the rectum has a peritoneal covering, which extends deep in the pelvis in women, forming the rectouterine pouch (of Douglas) as it is reflected along the posterior surface of the uterus.

What causes pouch of Douglas fluid?

The "mass effect" of a distended bladder may cause fluid in the pouch of Douglas to migrate to other parts of the peritoneal cavity, such as the peritoneal reflection over the fundus of the uterus. Fluid in this location produces a characteristic triangular "cap" and was present in 42 patients (29% of the study group).

How is vesicouterine pouch formed?

Vesicouterine pouch (female)

The second pelvic space formed by peritoneal covering in females is the vesicouterine pouch. The space exists between the posterior surface of the urinary bladder and the anterior surface of the uterus. This space is also continuous superiorly with the peritoneal cavity.