Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Lung volumes are low . The heart appears top normal in size . There is noted no convincing sign of pneumonia or CHF . A calcific density projecting over the right upper lung is more conspicuous than on prior exam and most likely represents calcified costal cartilage . Mediastinal contour appears unremarkable . Imaged osseous structures are intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
Top normal heart size . Limited exam due to low lung volumes . No convincing signs of pneumonia or CHF .