Revision 9 for 'Rectouterine pouch'

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Rectouterine pouch

The rectouterine pouch, also known as the rectovaginal pouch, cul-de-sac or pouch of Douglas, is an extension of peritoneum between the posterior wall of uterus and the rectum in females. It is the most dependent part of the peritoneal cavity and is analogous to the rectovesical pouch in males.

Gross anatomy

  • anteriorly: uterus, posterior fornix of the vagina
  • posteriorly: rectum
  • inferiorly: peritoneal rectovaginal fold

Related pathology

Being a most dependent and lower area of the peritoneal cavity of females in the supine position, fluids (e.g. abscess, infection, ascites, hemoperitoneum, and even intraperitoneal drop metastases) preferentially collects here.

A small amount of homogeneous and low-attenuated fluid in the rectouterine pouch is normally seen in child-bearing age women.

The pouch is useful in end-stage renal failure patients, where it is a preferred place for peritoneal dialysis.

History and etymology

It is named after the Scottish anatomist Dr James Douglas (1675–1742).

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