title: Umbilical endometriosis.
authors.forename: D F
authors.initials: DF
authors.lastname: du Toit
authors.forename: J J
authors.initials: JJ
authors.lastname: Heydenrych
mesh_terms: D000328:Adult; D004715:Endometriosis / Q000209:etiology*; D005260:Female; D006801:Humans; D012871:Skin Diseases / Q000209:etiology*; D013246:Sterilization, Tubal / Q000009:adverse effects*; D013997:Time Factors; D014472:Umbilicus / Q000601:surgery