Symptomatic Primary Umbilical Endometriosis: A Case Report and A Review of the Literature

Endometriosis is a condition defined as extrauterine functional endometrial tissue, typically seen on pelvic peritoneal surfaces, leading to symptoms such as cyclic pain, dysmenorrhea, dyspareunia, and infertility. Extra-pelvic endometriosis is uncommon, especially the umbilical form. We present an interesting case of primary umbilical endometriosis (Villar’s nodule) in a patient with no medical or surgical history, who presented with umbilical pain and bleeding. She was found to have a bluish umbilical nodule, which was surgically removed and sent to the pathology to confirm the diagnosis. The report aims to highlight the diagnosis and management of umbilical endometriosis and the possibility of its occurrence even in patients without prior surgical history.