Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable AP chest radiograph demonstrates obscuration of the left diaphragm . Additional note is made of slight leftward deviation of the mediastinal structures reflective of volume loss within left hemithorax . A focal consolidation can not be excluded . Underlying left pleural effusion may also be present . Heart is enlarged . Patient is status post median sternotomy with intact wires . There is no pneumothorax .
    OUTPUT:
    
Obscuration of left hemidiaphragm with shift of mediastinal structures to the left consistent with significant volume loss , though a focal underlying consolidation due to infection or aspiration can not be excluded . Underlying left pleural effusion may also be present .