Other Locations of Deep Endometriosis

While pelvic endometriosis is defined as lesions of the fallopian tubes, ovaries, and local peritoneum, extrapelvic endometriosis refers to endometriotic implants found elsewhere in the body [1]. The extrapelvic implantation of endometrial tissue has been described in virtually every organ, system, and tissue in the body [2]. The true prevalence of extrapelvic endometriosis is unknown because of a lack of well-defined epidemiological studies; in fact, only surgical and gynecological case reports are reported. Many diagnostic methods have been proposed, but none of them represents the gold standard. The role of ultrasonography has been proposed and recognized only in some locations [1].