Primary Umbilical Endometriosis: Case Report and Literature Review.

Primary umbilical endometriosis is defined as presence of ectopic endometrial glands within umbilicus without prior history of pelvic endometriosis. It is rare presentation in all cases of endometriosis, especially in Asians. We reported a 37 year-old female patient presented as an umbilical mass with cyclic bleeding who received complete surgical resection of umbilical lesion. Primary umbilical reconstruction was done. Good aesthetic result was obtained after 6 months follow-up. During the follow up of 10 years period, no recurrence was found. The epidemiology, clinical symptoms, pathophysiology, treatment and differential diagnosis of umbilical lesion were reviewed.