Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Slight asymmetry of the hemithoraces is unchanged . The cardiomediastinal and hilar contours are unremarkable . Possible minimal atelectasis in the retrocardiac region . Otherwise , no CHF , focal consolidation , pleural effusion , or pneumothorax is detected . Chronic deformity of the left glenohumeral joint and but humeral head is partially imaged .
    OUTPUT:
    
Possible minimal atelectasis in the left retrocardiac region . Otherwise , no acute pulmonary process identified . There is ongoing concern for the left lower lobe infectious infiltrate , then a lateral view may help for further assessment .