Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were provided . There is no focal consolidation , effusion , or pneumothorax . No signs of pulmonary edema . Cardiomediastinal silhouette is normal . There is a subtle nodular opacity projecting over the left mid lung , seen only on the frontal view , which is of unclear etiology . This finding was not seen on prior exam . Bony structures are intact .
    OUTPUT:
    
No pneumonia or CHF . Vague nodularity in the left mid lung for which non-emergent chest CT is recommended to further assess .