Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been substantial interval resolution of previously seen left upper lobe pneumonia . There is a small residual opacification measuring approximately 2 .0 x 3 .0 cm , best seen in the lateral view , which may represent selective catheterization . Heart size is within normal limits . Mediastinal and hilar contours are unremarkable . There is no evidence for pulmonary edema , pleural effusion , or pneumothorax . Left anterior descending artery calcification seen .
    OUTPUT:
    
Substantial interval resolution of left upper lobe pneumonia with small residual opacification . Follow - up in ___ weeks is recommended .