Spontaneous umbilical endometriosis: Rare occurrence in nulliparous women - Case report & literature review

Endometriosis is an inflammatory disease associated with pelvic pain and infertility that is characterized by lesions of endometrial-like tissue outside of the uterus. It affects roughly 10 % of reproductive age women and girls globally. Umbilical endometriosis is a rare pathology accounting for 0.5 to 1 % of all extra-pelvic endometriosis. Due to the varied presentations and rare incidence of endometriosis, it remains a diagnostic dilemma and challenge to treat it timely and properly.