Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left basilar opacity has decreased compared with prior , suggesting improving atelectasis . The lungs are otherwise clear without focal consolidation , pleural effusion , or pneumothorax . The cardiac and mediastinal contours are normal . There is no pulmonary edema . A right chest port is unchanged in appearance with its tip in the mid SVC .
    OUTPUT:
    
Resolving left basal atelectasis , without acute chest abnormality .