Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Focal region of consolidation noted within the infrahilar region on the left localizing to the lingula . There is an associated lucency with this consolidation . On the frontal view , there is a somewhat spiculated nodule projecting over the anterior left fourth rib . Well - circumscribed density silhouetting the medial right hemidiaphragm without silhouetting the right cardiac border is of uncertain etiology , potentially a prominent fat pad or other lesion such as pericardial cyst , less likely a hernia . Lungs are otherwise clear . Cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities .
    OUTPUT:
    
Consolidation in the lingula which could represent pneumonia . Given associated lucency with this region underlying cavitation is possible . Spiculated nodule projecting over the left mid lung . Additional density at the right cardiophrenic angle .