part of part of peritoneum Douglas' pouch http://upload.wikimedia.org/wikipedia/commons/5/51/WeiblichesBeckenMedian.gif rectouterine excavation cul de sac of douglas cul-de-sac of douglsa douglas cul-de-sac pouch of douglas recto-uterine pouch MESH:D004312 douglas' cul de sac recto-uterine pouch excavatio recto-uterina SCTID:181447009 UBERON:0007111 excavatio rectouterina fossa Douglasi NCIT:C33447 The rectouterine pouch (or rectouterine excavation, rectovaginal, Ehrhardt-Cole Recess or Pouch of Douglas) is the extension of the peritoneal cavity between the rectum and back wall of the uterus in the female human body. The rectouterine pouch is used in the treatment of end-stage renal failure in patients who are treated by peritoneal dialysis. The tip of the dialysis catheter is placed into the deepest point of the pouch. In women it is the deepest point of the peritoneal cavity, posterior to (behind) the uterus and anterior to (in front of) rectum. (The pouch on the other side of the uterus is the vesicouterine excavation. ) It is near the posterior fornix of the vagina. In men, the region corresponding to the rectouterine pouch is the rectovesical excavation, which lies between the urinary bladder and rectum. (There is no equivalent to the vesicouterine excavation.). douglas pouch douglas' cul-de-sac FMA:14728 Wikipedia:Recto-uterine_pouch UMLS:C1514801 GAID:20 douglas' pouch excavatio rectouterina rectouterine pouch rectouterine space cavum Douglassi fold of peritoneum