Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Chest PA and lateral radiograph demonstrates a left upper lobe opacification with area of central lucency concerning causing abrupt termination of a left upper lobe bronchus . Finding is nonspecific with etiologies ranging from possibly malignancy such as squamous cell carcinoma or acute infectious process , such as abscess , active tuberculosis , necrotizing pneumonia , or fungal infection . Cardio mediastinal and hilar contours are unremarkable . No pleural effusion or pneumothorax is evident . No osseous abnormalities are identified .
    OUTPUT:
    
Large left upper lobe mass with central lucency and abrupt termination of left lower lobe bronchus concerning for obstructing process , possibly malignancy versus infectious process . ___ communicated these findings to Dr . ___ at 16 :30 on ___ via telephone .