Endometriosis is defined as endometrial tissue outside the uterine cavity. It can be asymptomatic or cause symptoms such as dysmenorrhea or infertility. Primary umbilical endometriosis is a rare entity, and its definitive treatment is surgical excision with free margins.; Endometriose define-se como tecido endometrial fora da cavidade uterina. Pode ser assintomática ou causar sintomatologia como dismenorreia ou...