a peritoneal depression on either side of the rectum formed by peritoneal (sacrogenital) folds passing from the posterolateral pelvic wall to the central pelvic viscera. The fossa is a lateral extension of the male rectovesical pouch or the female rectouterine pouch.
Synonym(s): fossa pararectalisTA, pararectal pouch
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Examples: glitazone, GI cocktail, etc.