title: Extra-axial chordoma presenting as a lung mass.
abstract: Chordomas are slow-growing, malignant tumors of bone that are thought to be derived from the primitive notochord and occur almost exclusively in the axial skeleton. The so-called extra-axial chordoma has been shown to demonstrate identical features to the classic chordoma, except that it is found outside the axial skeleton. Only six cases of extra-axial chordoma have been reported in the literature to date. In this report, we present another case of extra-axial chordoma for the first time originating from the lung parenchyma. A 79-year-old man presented a 7.3-cm-sized cavitary lung mass. Pathologic examination, including immunohistochemical studies, revealed that the mass was a chordoma. We report an extra-axial chordoma for the first time presenting as a lung mass.
authors.affiliation: Department of Internal Medicine and Airway Remodeling Laboratory, Chonbuk National University Medical School, Jeonju, South Korea.
authors.forename: Seung Yong
authors.initials: SY
authors.lastname: Park
authors.forename: So Ri
authors.initials: SR
authors.lastname: Kim
authors.forename: Yeong Hun
authors.initials: YH
authors.lastname: Choe
authors.forename: Ka Young
authors.initials: KY
authors.lastname: Lee
authors.forename: Seoung Ju
authors.initials: SJ
authors.lastname: Park
authors.forename: Heung Bum
authors.initials: HB
authors.lastname: Lee
authors.forename: Gong Yong
authors.initials: GY
authors.lastname: Jin
authors.forename: Kyu Yun
authors.initials: KY
authors.lastname: Jang
authors.forename: Yong Chul
authors.initials: YC
authors.lastname: Lee
mesh_terms: D000368:Aged; D002817:Chordoma / Q000473:pathology*; D006801:Humans; D008175:Lung Neoplasms / Q000473:pathology*; D008297:Male