title: Villar's nodule: umbilical endometriosis in a patient with stage IV endometriosis and previous umbilical hernia repair.
authors.affiliation: Department of Obstetrics and Gynecology, The Ottawa Hospital, University of Ottawa, Ottawa ON.
authors.forename: Darine
authors.initials: D
authors.lastname: El-Chaâr
authors.forename: Glenn
authors.initials: G
authors.lastname: Posner
mesh_terms: D004715:Endometriosis / Q000473:pathology* / Q000601:surgery; D005260:Female; D006554:Hernia, Umbilical / Q000601:surgery; D006801:Humans; D007044:Hysterectomy; D008875:Middle Aged; D010052:Ovariectomy; D058994:Salpingectomy; D014472:Umbilicus / Q000473:pathology*