title: [A case of pulmonary MALT lymphoma with 6-year natural history].
abstract: A 58-year-old asymptomatic man was referred for investigation of an abnormal shadow on chest X-ray films. Chest computed tomography (CT) revealed an infiltrative shadow containing an air-bronchogram. Video-assisted thoracic surgery was performed for a lung biopsy of an abnormal region in the right upper lobe of the lung. Based on immunohistochemical examinations and gene analysis, the abnormal shadow was diagnosed as primary pulmonary B-cell lymphoma of mucosa-associated lymphoid tissue, t(11; 18)/API2-MALT1. Rituximab-CHOP therapy yieled a complete response. He had abnormal shadows on chest X-ray films in both lung fields since 6 years previously. Retrospective examination of chest radiographs revealed slow growth during the 6 years.
authors.affiliation: Department of Respiratory Medicine, National Hospital Organization, Hakodate Hospital.
authors.forename: Miki
authors.initials: M
authors.lastname: Satoh
authors.forename: Osamu
authors.initials: O
authors.lastname: Wakabayashi
authors.forename: Eisei
authors.initials: E
authors.lastname: Jinushi
authors.forename: Fumiaki
authors.initials: F
authors.lastname: Yoshida
authors.forename: Nozomu
authors.initials: N
authors.lastname: Iwashiro
authors.forename: Yoshikazu
authors.initials: Y
authors.lastname: Araya
mesh_terms: D006801:Humans; D008175:Lung Neoplasms / Q000000981:diagnostic imaging; D018442:Lymphoma, B-Cell, Marginal Zone / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D011859:Radiography