Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . The heart remains moderately enlarged . Lung volumes are low . Unchanged right mid lung linear density could represent scarring versus fluid in the fissure . Other this the lungs appear clear . Mediastinal contours stable with the unfolded thoracic aorta again noted . Bony structures appear intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
Cardiomegaly , no acute findings .