Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . Findings are similar to prior . There is diffuse increased interstitial markings bilaterally , worse in the mid-to - lower lung but seen diffusely throughout the lungs , worrisome for chronic interstitial lung disease . Acute - on - chronic process is not excluded in the mid-to - lower lung fields . However , findings are similar to prior . No pleural effusion or pneumothorax is seen . Cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
Diffuse increase in interstitial markings bilaterally , suggesting chronic interstitial lung disease similar to prior , with prominence in the mid-to - lower lung . A more acute component in the mid - to - lower lung fields is not excluded although appears similar to prior .