Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours are within normal limits . The pulmonary vascularity is not engorged . A 17 mm nodular opacity projecting over the left upper lobe corresponds to a calcified pleural plaque within the left anterior chest , as seen on the prior CT . Streaky right basilar opacities likely reflect atelectasis . No focal consolidation , pleural effusion or pneumothorax is identified . There are cholecystectomy clips in the right upper quadrant of the abdomen . No free intraperitoneal air is seen under the diaphragms .
    OUTPUT:
    
Mild right basilar atelectasis . No free intraperitoneal air identified .