Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable upright chest radiograph was provided . Again seen is prominence of the interstitial markings , similar to the prior studies , compatible with chronic lung disease . There is no superimposed pulmonary edema or focal consolidation . There is no pleural effusion or pneumothorax . The cardiomediastinal silhouette is unchanged . The bones are intact .
    OUTPUT:
    
No acute cardiopulmonary process . Chronic interstitial lung disease .