Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP chest radiograph demonstrates decreased in lung volumes and increased reticular opacities compared to prior imaging from ___ years before . In addition , there is a noticeable apicobasal gradient . There is no cardiomegaly , pleural effusion , or evidence of pulmonary edema . Aside from tortuosity of the aorta , the cardiomediastinal silhouette is normal . There is no pneumothorax .
    OUTPUT:
    
Marked progression of reticular lung opacities compared to ___ . Decreased lung volumes makes a fibrotic lung process likely . CT chest is recommended for further characterization .