Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well - expanded . Asymmetric increased lucency in the left upper lobe , suggestive of emphysema . No focal consolidation , pleural effusion , pulmonary edema , or pneumothorax . No discrete pulmonary nodule or mass . Normal cardiomediastinal silhouette , without cardiomegaly . Slight fullness of the right hilum , but no frank mass . Normal - appearing pleura . No acute osseous abnormality .
    OUTPUT:
    
Probable left upper lobe emphysema and right hilar fullness . Chest CT is recommended for further evaluation .