[Giant pelvic epidermoid cyst: a rare observation].

Epidermoid cyst is a frequent benign tumor. It gives rise to destruction of adjoining tissues, chiefly in the skull. The pelvic epidermoid cyst is rare. We report the second case of giant pelvic epidermoid cyst with a 25-year-old girl. Ultrasound exploration and computed tomography evoked an ovarian origin. The surgery discovers an epidermoid cyst under the peritoneum. Ovaries and uterus were undamaged. We realized an evacuation of cyst, which contained lamellas of keratin. Histology allowed confirmation of diagnosis. The patient is always observed after 18 months.