Abstract
After 4-months of alpha interferon (IFN-α), a 64-year old woman with chronic hepatitis C developed a cough and dyspnea and showed diffuse infiltrative opacities on her chest X-ray. Her symptoms persisted after stopping the IFN-α therapy. Pulmonary function testing revealed a reduced forced vital capacity. High-resolution computed tomography of the lung showed peripheral and peribronchovascular ground glass attenuation and consolidation associated with reticulation. Bronchoalveolar lavage was performed for further evaluation and showed a lymphocyte level of 8.2%, an uncommon finding in IFN-α-induced interstitial pneumonitis. We performed a lung biopsy to diagnose her disease and it suggested interstitial pneumonitis. This was considered to be due to the immunomodulatory effects of INF-α. Although rare, any sign of significant pulmonary involvement should be evaluated.
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Table 1.
No. | FEV1 (L) (% Predicted) | FVC (L) (% Predicted) | FEV1/FVC (% Predicted) | DLCO (ML/min/mmHg) (% Predicted) |
---|---|---|---|---|
1: On admission | 93 | 75 | 88 | 45 |
2: After 1 mo | 100 | 85 | 84 | 46 |
3: After 2 mo | 110 | 95 | 83 | 58 |