PMC5683810_01
Chest radiograph of the patient. (A) Chest X-ray revealed bilateral infiltration predominantly in the lower fields. HRCT of the chest demonstrated nonsegmental subpleural consolidation and ground glass opacity mainly in the lower lung. (B) Follow-up chest X-ray and HRCT findings obtained after 2 months showed improvement of the previously existing opacities.
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Chest X-ray showed bilateral infiltration in the lower field, and chest high-resolution computed tomography (HRCT) showed nonsegmental subpleural consolidation and ground glass opacity, indicating nonspecific interstitial pneumonia (NSIP) with OP pattern (Fig. 1). Two months later, the patient's symptoms such as dry cough and dyspnea completely disappeared, and chest HRCT revealed that the lung infiltration had also disappeared (Fig. 1).
Histopathological findings from transbronchial lung biopsy. Bronchial and alveolar tissue with moderate chronic inflammatory infiltrate, focal fibrosis, and aggregates of macrophages and hyperplastic pneumocytes. Organized materials were focally evident in the alveolar spaces (arrows). Original magnification: x10.
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Transbronchial lung biopsy specimen suggested OP (Fig. 2).