Nódulo de Villar: um caso clínico raro

Endometriosis is defined as endometrial tissue outside the uterine cavity. Pelvic locations of the disease are more prevalent, but it also occurs in many extra-pelvic locations. Abdominal wall endometriosis is usually associated with the presence of scars, more often after cesarean or histerectomy (secondary abdominal wall endometriosis). Primary abdominal wall endometriosis is a rare condition, and occurs in patients with no abdominal scars. We present a case of a 44-year-old woman, nulliparous, with no personal history of abdominal surgery. She complained of an umbilical mass with 3,5cm which was painful and had a bloody drainage during menses. She underwent surgery with excision of the mass. The pathology findings of endometrial glands and stroma confirmed the clinical assumption of endometriosis. Inspection of the pelvis showed no pelvic endometriosis.