title: Endometriosis of the umbilicus.
abstract: Endometriosis is a common phenomenon. Most cases reported are pelvic endometriosis which cause typical symptoms. Cutaneous endometriosis is rare, usually appearing in surgical scars or following surgical procedures. Umbilical endometriosis can occur after surgery but is generally spontaneous. Six cases of spontaneous umbilical endometriosis are presented.
mesh_terms: D000328:Adult; D004715:Endometriosis / Q000473:pathology* / Q000601:surgery; D005260:Female; D006801:Humans; D008875:Middle Aged; D012878:Skin Neoplasms / Q000473:pathology* / Q000601:surgery; D014472:Umbilicus / Q000601:surgery