Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left upper lung focal opacity may represent superimposition of structures , peribronchovascular infectious process , or a lung nodule . Chest CT is recommended for further evaluation . There is no focal consolidation , pleural effusion , pulmonary edema , or pneumothorax . Biapical pleural and parenchymal scarring is noted . The cardiomediastinal silhouette is normal .
    OUTPUT:
    
1 . No evidence of acute cardiopulmonary process . 2 . Nonemergent chest CT is recommended for further evaluation of a left upper lung opacity .