Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The aorta remains tortuous but unchanged . The hilar contours are stable , and there is continued elevation the right hemidiaphragm . Linear opacities within the lung bases are compatible with subsegmental atelectasis . No pleural effusion , focal consolidation or pneumothorax is present . There is no pulmonary vascular congestion . Moderate loss of height of a mid thoracic vertebral body anteriorly is unchanged .
    OUTPUT:
    
Bibasilar subsegmental atelectasis . Chronic elevation the right hemidiaphragm .