Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Linear areas of atelectasis / scarring are seen in the right mid lung and lateral left lung base . Patchy opacity seen posteriorly on the lateral view may be due to atelectasis and overlap of vascular structures although infectious process is not excluded in the appropriate clinical setting . No pleural effusion or pneumothorax is seen . The cardiac silhouette is top - normal . The aortic knob is calcified . Mediastinal contours are unremarkable . There appears to be partially imaged chronic deformity at the proximal left humerus .
    OUTPUT:
    
Patchy opacity seen posteriorly on the lateral view may be due to atelectasis and overlap of vascular structures although infectious process is not excluded in the appropriate clinical setting . Scattered areas of atelectasis / scarring .