Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Linear opacities in the bilateral lower lobes likely represents subsegmental atelectasis . There is no focal consolidation , effusion , or pneumothorax . The cardiomediastinal silhouette is normal . Calcification along the expected region 1 of the left lower thoracic anterior ribs likely represents a chronic rib deformity . No free air below the right hemidiaphragm is seen . Clip is noted overlying the right upper quadrant . Vascular stent projects over the expected region of the left axillary vein or artery .
    OUTPUT:
    
1 . Linear opacities in the left greater than right lower lobes likely represent subsegmental atelectasis . 2 . No focal consolidation or definite evidence of pneumonia .