Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low which leads to bronchovascular crowding . The heart is severely enlarged without overt edema . Replaced mitral valve appears in unchanged position . There is no pneumothorax . Trace bilateral pleural effusions are noted . Median sternotomy wires are present .
    OUTPUT:
    
1 . Severe cardiomegaly without overt edema or focal consolidation . 2 . Trace bilateral pleural effusions .