Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is top normal , slightly increased in size compared to the exam from ___ . The hilar and mediastinal contours are unchanged including moderate tortuosity of the descending aorta . There are patchy opacities in each mid to lower lung , including an opacity projecting posteriorly on the lateral view , probably in the superior segment of the left lower lobe , suggesting pneumonia . There is no pleural effusion or pneumothorax . The visualized osseous structures are unremarkable .
    OUTPUT:
    
Findings suggesting pneumonia in the left lower lobe . Follow - up radiographs are recommended to document resolution within ___ weeks .