[Hedrocele, an unknown pelvic organ prolapse].

Pelvic floor disorders are frequent and source of symptoms which can be invalidating for patients. Between them, hedrocele is a pathology often unknown and clinically difficult to diagnose. It is a herniation of fat pad, small bowel or sigmoid colon in the recto-uterine pouch (cul-de-sac of Douglas) exercising a mass effect on the anterior wall of the rectum. Pelvic magnetic resonance imaging with morphological sequences and dynamic sequences in thrust can be very useful, allowing a comprehensive study of pelvic floor dysfunction and confirming the complete diagnosis, especially before surgery. We suggest you some examples to illustrate this pathology in order to emphasize the importance of its diagnosis, especially preoperative. A better understanding of this pelvic floor dysfunction would improve the care of patients.