Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Evaluation of the chest is limited due to low inspiratory lung volumes and slight patient rotation with resultant prominence of the cardiomediastinal silhouette and lung markings due to under - inflation . Within this limitation , there is no focal consolidation concerning for pneumonia . No large pleural effusion or pneumothorax is detected , although evaluation at the lung apices is limited due to superimposition of cervicocranial soft tissues . Streaky retrocardiac opacities most likely reflect atelectasis in the setting of low lung volumes . The pulmonary vasculature is not engorged and there is no overt pulmonary edema . The cardiomediastinal silhouette is prominent , with unfolding of the thoracic aorta and mild calcification of the aortic knob . The trachea is slightly deviated to the right by the aortic arch . There is no free air beneath the right hemidiaphragm on this semi-erect view .
    OUTPUT:
    
Limited evaluation of the chest with low lung volumes and bibasilar atelectasis .