Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Better visualized on same day CTA head and neck , is a irregular opacity projecting over the left upper lung with adjacent lucency corresponding to a cystic and solid lesion , containing areas of calcification in the left upper lobe . Elsewhere lungs are clear . Cardiomediastinal silhouette is normal . No acute bony abnormalities .
    OUTPUT:
    
Irregular nodular lesion in the left upper lobe with adjacent pneumatocele / bleb , better assessed on same - day CTA head and neck . Please correlate with prior imaging if available . If no prior imaging is available a dedicated chest CT is recommended on a nonemergent basis to further assess .