Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Median sternotomy wires and mediastinal clips are noted . Tracheostomy in stable position . Mild cardiomegaly is unchanged . Since prior , there has been no significant change in vascular congestion . There is increased left basilar opacity .
    OUTPUT:
    
1 . Mild vascular congestion , not significantly changed compared to ___ . 2 . Mild increase left basilar opacification , most consistent with atelectasis , pneumonia should be considered in the correct clinical setting .