Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . There is left lung volume loss with increased left upper lung opacity concerning for pneumonia . Scarring in the right apex is noted . The heart is mildly enlarged . No large effusion is seen . No pneumothorax . Mediastinal contour is within normal limits . Aortic calcification is present . Bony structures are intact .
    OUTPUT:
    
COPD with left upper lobe opacity concerning for pneumonia . Please note , follow - up to resolution is strongly recommended to exclude underlying malignant process .