Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear unchanged . There is increased opacification of the left base , although only well depicted on the frontal view . There is no definite pleural effusion or pneumothorax . Calcified pleural plaques are present . A surgical clip projects over the right anterolateral chest wall . Bony demineralization and degenerative changes along the thoracolumbar spine are unchanged .
    OUTPUT:
    
Left basilar opacity worrisome for pneumonia without findings that would suggest pulmonary edema .