Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to the previous radiograph , the lung volumes have decreased . There is moderate cardiomegaly and crowding of the vascular structures at the lung bases . No overt pulmonary edema . No pneumonia , no pneumothorax . No pleural effusions are visualized .
    OUTPUT:
    
Reduction in lung volumes with subsequent crowding of vascular structures at the lung bases . Moderate cardiomegaly without overt pulmonary edema .