title: Pulmonary alterations in patients with chronic HCV infection.
abstract: BACKGROUND
  Chronic hepatitis C virus infection has been reported in association with several extrahepatic manifestations. Included in this list is interstitial lung involvement.
  
  
  OBJECTIVE
  The aim of the present study was to evaluate pulmonary alterations in patients with chronic hepatitis C virus infection.
  
  
  METHODS
  Twenty-one patients with chronic hepatitis C virus infection were enrolled into a prospective study. One patient has been excluded because of underlying tuberculosis.
  
  
  METHODS
  All patients underwent pulmonary function tests, diffusion capacity for carbon monoxide and high-resolution computed tomography of the chest.
  
  
  RESULTS
  Forced vital capacity, forced expiratory volume in first second/forced vital capacity and forced expiratory volume in first second values were reduced to less than 80% of predicted values in 3, 11 and 5 patients, respectively. Diffusion capacity for carbon monoxide was low in 12 patients (60%), 8 of whom had simultaneous decrease in diffusion capacity for carbon monoxide/VA values. Thorax high-resolution computed tomography revealed abnormal findings in eight patients (40%). Fifteen patients with chronic hepatitis C virus infection (75%) had at least one pulmonary alteration as evidenced by abnormal pulmonary function tests, diffusion capacity for carbon monoxide and/or high-resolution computed tomography results.
  
  
  CONCLUSIONS
  In spite of a limited study population, these findings may implicate that pulmonary manifestations of chronic hepatitis C virus infection are frequently underdiagnosed.
authors.affiliation: Department of Respiratory Medicine, Ataturk Chest Disease and Thoracic Surgery Training and Research Hospital, Ankara, Turkey. arzuerturk@yahoo.com
authors.forename: A
authors.initials: A
authors.lastname: Erturk
authors.forename: A N
authors.initials: AN
authors.lastname: Tokgonul
authors.forename: N
authors.initials: N
authors.lastname: Capan
authors.forename: H
authors.initials: H
authors.lastname: Erturk
authors.forename: A B
authors.initials: AB
authors.lastname: Dursun
authors.forename: H
authors.initials: H
authors.lastname: Bozkaya
mesh_terms: D000328:Adult; D000368:Aged; D002248:Carbon Monoxide / Q000378:metabolism; D005260:Female; D019698:Hepatitis C, Chronic / Q000150:complications*; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D012129:Respiratory Function Tests; D012140:Respiratory Tract Diseases / Q000150:complications* / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed
chemical_list: D002248:Carbon Monoxide