Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate unchanged hyperexpansion of the lungs , with new opacity seen in the lingula . There is no pleural effusion , or pneumothorax . The cardiac silhouette remains mildly enlarged , the mediastinal contours are normal with the exception of calcification of the aortic knob . The pulmonary vasculature is normal .
    OUTPUT:
    
1 . No CHF . 2 . Increased lingular opacity likely atelectasis . As there is no explanation for this , further evaluation with CT is recommended to exclude an obstructive mass . Findings were entered into the radiology web - based results reporting tool for clinician notification .