Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac , mediastinal and hilar contours are normal . Pulmonary vasculature is not engorged . Ill - defined patchy opacity is noted predominantly within the left lower lobe concerning for aspiration pneumonia . Right lung is clear . No pleural effusion or pneumothorax is seen . No acute osseous abnormalities demonstrated .
    OUTPUT:
    
Findings concerning for left lower lobe aspiration pneumonia .