Abstract
A case of umbilical endometriosis was reported. A 37-year-old woman had had the painful umbilical tumor. The tumor was excised together with the umbilicus and the diagnosis was confirmed histologically.
Endometriosis is a common gynecological disease. And the ectopic functioning uterine mucosa is found in widely scattered areas of the body, but umbilical endometriosis is an uncommon disease in Japan.
To our knowledge, 13 cases of umbilical endometriosis were reported in the Japanese literatures.
