Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low bilaterally . There is mild pulmonary venous hypertension . There is bilateral basilar atelectasis and left mid lung atelectasis . The heart is mildly enlarged . The hila are unremarkable . No focal consolidation , pulmonary in edema , pleural effusion , or pneumothorax . Median sternotomy wires appear intact and prior CABG .
    OUTPUT:
    
1 . Mild cardiomegaly and pulmonary venous hypertension . 2 . Atelectasis .