Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a small left pleural effusion with adjacent atelectasis , similar in appearance to ___ . There is otherwise no focal consolidation . Minimal pleural thickening along the superolateral right chest wall could reflect mild residual pleural thickening at a site of prior pneumothorax . No pneumothorax is detected . No pleural effusion is seen on the right . cardiomediastinal silhouette is within normal limits . There are postoperative changes from prior CABG procedure . Median sternotomy wires are intact . Mild anterior wedging of what is probably the L1 vertebral body with slight kyphotic angulation at T12 / l1 is unchanged .
    OUTPUT:
    
Small left pleural effusion with adjacent atelectasis , unchanged . No acute pulmonary process identified .