title: Unilateral hilar lymphadenopathy of sarcoidosis or sarcoid reaction compressing the trunk of the right pulmonary artery.
abstract: A case of sarcoidosis or sarcoid reaction with a rare manifestation of unilateral lymphadenopathy compressing the trunk of the right pulmonary artery is presented. A 71-year-old woman was admitted for evaluation of a left hilar mass. Chest CT scans showed a mass invading the right pulmonary artery. A frozen section obtained following open lung biopsy showed lymph node tissue largely replaced by noncaseous granulomas indicating sarcoidosis or sarcoid reaction. Old uveitis was compatible with sarcoidosis, and no malignancy was evident. These findings suggested sarcoidosis, however, other evidence of sarcoidosis was not obtained.
authors.affiliation: Department of Laboratory Medicine and Internal Medicine, Shinshu University School of Medicine, Matsumoto, and Suwa Red Cross Hospital, Suwa, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Honda
authors.forename: M
authors.initials: M
authors.lastname: Hayasaka
authors.forename: T
authors.initials: T
authors.lastname: Hachiya
authors.forename: K
authors.initials: K
authors.lastname: Kubo
authors.forename: M
authors.initials: M
authors.lastname: Ohashi
mesh_terms: D000368:Aged; D001707:Biopsy, Needle; D003251:Constriction, Pathologic / Q000175:diagnosis / Q000209:etiology; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008206:Lymphatic Diseases / Q000150:complications / Q000175:diagnosis*; D011651:Pulmonary Artery / Q000000981:diagnostic imaging*; D017565:Sarcoidosis, Pulmonary / Q000150:complications / Q000175:diagnosis*; D013908:Thoracotomy; D014057:Tomography, X-Ray Computed