title: Umbilical endometriosis elucidates cause of recurrent pneumothorax.
authors.affiliation: Geisinger Medical Center, Danville, Pennsylvania. Electronic address: cmowad@geisinger.edu.
authors.forename: Christen
authors.initials: C
authors.lastname: Mowad
authors.affiliation: Commonwealth Medical School, Scranton, Pennsylvania.
authors.forename: Cassondra
authors.initials: C
authors.lastname: Andreychik
authors.affiliation: Geisinger Medical Center, Danville, Pennsylvania.
authors.forename: Timothy
authors.initials: T
authors.lastname: Murphy
mesh_terms: D000328:Adult; D003964:Diaphragm / Q000473:pathology; D004715:Endometriosis / Q000150:complications* / Q000473:pathology; D005260:Female; D006801:Humans; D011030:Pneumothorax / Q000175:diagnosis / Q000209:etiology*; D012008:Recurrence; D014472:Umbilicus / Q000473:pathology