title: Interstitial lung disease in association with polymyositis-dermatomyositis: long-term follow-up CT evaluation in seven patients.
abstract: OBJECTIVE
  To determine the long-term follow-up computed tomographic (CT) findings of interstitial lung disease associated with polymyositis-dermatomyositis.
  
  
  METHODS
  CT scans in seven patients with interstitial lung disease and associated polymyositis-dermatomyositis were evaluated retrospectively. Six patients underwent sequential CT (follow-up range, 2-8 years; mean, 4.3 years). Histologic confirmation of pulmonary involvement was available in five patients.
  
  
  RESULTS
  The predominant finding on the initial CT scans in four patients was subpleural consolidation, which corresponded to bronchiolitis obliterans organizing pneumonia with or without coexistent chronic eosinophilic pneumonia. In most cases, consolidation improved with use of corticosteroid and/or immunosuppressive therapy; in two patients, however, consolidation evolved into honeycombing. In one patient, diffuse areas of ground-glass opacity and consolidation appeared rapidly during illness; this patient died of sudden, rapid deterioration. In one patient with subpleural linear opacities, parenchymal abnormalities slowly progressed, and linear opacities had evolved into honeycombing at 8-year follow-up. In one patient with histologically proved organizing diffuse alveolar damage, bilateral patchy areas of ground-glass opacity and consolidation were seen. In one patient, subpleural bands changed to subpleural lines on sequential CT scans.
  
  
  CONCLUSIONS
  CT provides an excellent demonstration of the lung changes in patients with interstitial lung disease and associated polymyositis-dermatomyositis.
authors: Department of Radiology, National Kinki Chuo Hospital for Chest Disease, Osaka, Japan.
authors: M
authors: M
authors: Akira
authors: H
authors: H
authors: Hara
authors: M
authors: M
authors: Sakatani
mesh_terms: D003882:Dermatomyositis / Q000150:complications*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging; D017563:Lung Diseases, Interstitial / Q000000981:diagnostic imaging* / Q000209:etiology; D008297:Male; D008875:Middle Aged; D017285:Polymyositis / Q000150:complications*; D012189:Retrospective Studies; D013997:Time Factors; D014057:Tomography, X-Ray Computed