proctocele
  直腸膨出; 直腸突出
  Proc·to·cele n.  Med. Inversion and prolapse of the mucous coat of the rectum, from relaxation of the sphincter, with more or less swelling; prolapsus ani.
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  proctocele
       n : protrusion or herniation of the rectum into the vagina; can
           occur if pelvic muscles are weakened by childbirth [syn:
           rectocele]