Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Mediastinal and hilar contours are unremarkable . Linear opacities are noted within the medial aspect of the right upper lobe and right mid lung field likely related to the patient 's history of prior pleural mass excision . Linear opacity in the left lung base with tenting of the diaphragm is compatible with atelectasis . No focal consolidation , pleural effusion , mass lesion , or pneumothorax is present . No pulmonary vascular congestion is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
Postoperative scarring within the right lung and left basilar atelectasis .