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Erschienen in: European Radiology 8/2012

01.08.2012 | Chest

Chronic hypersensitivity pneumonitis: high resolution computed tomography patterns and pulmonary function indices as prognostic determinants

verfasst von: Simon L. F. Walsh, Nicola Sverzellati, Anand Devaraj, Athol U. Wells, David M. Hansell

Erschienen in: European Radiology | Ausgabe 8/2012

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Abstract

Objectives

To investigate high resolution computed tomography (HRCT) and pulmonary function indices (PFTs) for determining prognosis in patients with chronic fibrotic hypersensitivity pneumonitis (CHP).

Methods

Case records, PFTs (FEV1, FVC and DLco) and HRCTs of ninety-two patients with chronic hypersensitivity pneumonitis were evaluated. HRCT studies were scored by two observers for total disease extent, ground-glass opacification, fine and coarse reticulation, microcystic and macrocystic honeycombing, centrilobular emphysema and consolidation. Traction bronchiectasis within each pattern was graded. Using Cox proportional hazards regression models the prognostic strength of individual HRCT patterns and pulmonary function test variables were determined.

Results

There were forty two deaths during the study period. Increasing severity of traction bronchiectasis was the strongest predictor of mortality (HR 1.10, P < 0.001, 95%CI 1.04-1.16). Increasing global interstitial disease extent (HR 1.02, P = 0.02, 95%CI 1.00-1.03), microcystic honeycombing (HR 1.09, P = 0.019, 95%CI 1.01-1.17) and macrocystic honeycombing (HR 1.06, P < 0.01, 95%CI 1.01-1.10) were also independent predictors of mortality. In contrast, no individual PFT variable was predictive of mortality once HRCT patterns were accounted for.

Conclusion

HRCT patterns, in particular, severity of traction bronchiectasis and extent of honeycombing are superior to pulmonary function tests for predicting mortality in patients with CHP.

Key Points

HRCT is increasingly used to assess chronic fibrotic hypersensitivity pneumonitis.
HRCT patterns are superior to pulmonary function tests for predicting mortality.
Extensive traction bronchiectasis strongly predicts poor survival in chronic hypersensitivity pneumonitis.
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Metadaten
Titel
Chronic hypersensitivity pneumonitis: high resolution computed tomography patterns and pulmonary function indices as prognostic determinants
verfasst von
Simon L. F. Walsh
Nicola Sverzellati
Anand Devaraj
Athol U. Wells
David M. Hansell
Publikationsdatum
01.08.2012
Verlag
Springer-Verlag
Erschienen in
European Radiology / Ausgabe 8/2012
Print ISSN: 0938-7994
Elektronische ISSN: 1432-1084
DOI
https://doi.org/10.1007/s00330-012-2427-0

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