Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is an area of opacity in the left middle lung field , with obscuration of the left heart border and projecting over the heart shadow in the lateral radiograph . The upper left lung field and the right lung are clear . Cardiomediastinal and hilar contours are unremarkable . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Lingular pneumonia . These findings were communicated to Dr . ___ on ___ at 11 :45 a .m . by Dr . ___ ___ telephone .