Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and the lateral views of the chest demonstrate low lung volumes . There is no pleural effusion , focal consolidation or pneumothorax . Hilar and mediastinal silhouettes are unremarkable . Heart size is top normal . There are prominent interstitial markings . Partially imaged upper abdomen is unremarkable .
    OUTPUT:
    
Prominent interstitial markings , which may reflect interstitial edema or underlying chronic interstitial lung disease . Mild cardiomegaly .