title: Primary pulmonary meningioma presenting with hemoptysis on exertion.
abstract: An 18-year-old woman presented with hemoptysis during long-distant running. A chest computed tomographic scan revealed a well-demarcated, round-shaped, solitary mass (3.0 cm in diameter) in the left pulmonary hilum. The bleeding was getting more often and a left upper lobectomy was carried out to avoid critical airway bleeding. A solid proliferation of short spindle cells with a remarkable whorl pattern was demonstrated histologically. Immunohistochemical studies showed positive for vimentin and S-100, and focally positive for epithelial membrane antigen. Primary pulmonary meningioma was thus diagnosed. The patient is well without recurrent disease 15 months after surgery.
authors.affiliation: Department of Thoracic Surgery, Osaka City University Hospital, Osaka, Japan.
authors.forename: Nobuhiro
authors.initials: N
authors.lastname: Izumi
authors.forename: Noritoshi
authors.initials: N
authors.lastname: Nishiyama
authors.forename: Takashi
authors.initials: T
authors.lastname: Iwata
authors.forename: Koshi
authors.initials: K
authors.lastname: Nagano
authors.forename: Takuma
authors.initials: T
authors.lastname: Tsukioka
authors.forename: Shoji
authors.initials: S
authors.lastname: Hanada
authors.forename: Shigefumi
authors.initials: S
authors.lastname: Suehiro
mesh_terms: D000293:Adolescent; D003937:Diagnosis, Differential; D005260:Female; D006469:Hemoptysis / Q000209:etiology*; D006801:Humans; D007150:Immunohistochemistry; D008175:Lung Neoplasms / Q000150:complications* / Q000000981:diagnostic imaging / Q000378:metabolism / Q000473:pathology / Q000601:surgery; D008579:Meningioma / Q000150:complications* / Q000000981:diagnostic imaging / Q000378:metabolism / Q000473:pathology / Q000601:surgery; D011013:Pneumonectomy; D014057:Tomography, X-Ray Computed