The pouch of Douglas is an anatomical structure found between the rectum and uterus in females. Read the below article for more information.
Fluid in Anterior or Posterior Cul-de-Sac
EPOS™
The E-FAST Exam – Chapter 26 Media Library – WFUMB
Pelvic cavity: Anatomical spaces
Right para-tubal cyst, implanted to the pouch of Douglas and right
Deep endometriosis of the pouch of Douglas in a 30 year old woman
Diagnosing the Cause of and Measuring Cul-de-Sac Fluid
First-Trimester Pregnancy
Anatomy of the pouch of douglas (Rectouterine or rectovaginal pouch), Culdocentesis and its use
Recto uterine pouch or Pouch of Douglas