Umbilical endometriosis is rare, representing only 0.5-1% of all cases of extragenital endometriosis. In infertile women, endometriosis may be as prevalent as 50%. Numerous differential diagnoses are present, hence the clinical diagnosis of umbilical tumours is intricate. In a 33-year-old woman, an
We report a case of umbilical endometriosis externa and systematically review the literature regarding this finding. In our case report, a 47-year-old woman with cyclic umbilical bleeding, pelvic pain, and no previous umbilical surgery developed a spontaneous umbilical endometrioma, cured by