Bilateral upper lobe lung fibrosis

  • Tuberculosis
  • Sarcoidosis
  • Histoplasmosis
  • Allergic bronchopulmonary aspergillosis
  • Chronic extrinsic allergic alveolitis
  • Ankylosing spondylitis
  • Progressive massive fibrosis
  • Idiopathic pleuroparenchymal fibroelastosis