Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP single view of the chest has been obtained with patient in sitting upright position . Analysis is performed in direct comparison with the next preceding similar study of ___ . High - positioned diaphragms conceal major portion of cardiac silhouette , but significant cardiac enlargement is unlikely . The thoracic aorta is mildly widened and elongated but does not demonstrate any local contour abnormalities . The pulmonary vasculature is not congested . There exists bilateral plate thin atelectasis . There is no evidence of any new discrete pulmonary parenchymal infiltrate of pneumonic nature . Also , the lateral pleural sinuses are free , which excludes major pleural effusion . No pneumothorax identified in right apical area . A right internal jugular approach central venous line remains similar as on the preceding study .
    OUTPUT:
    
Bilateral basal plate atelectasis , high - positioned diaphragms , no evidence of new acute parenchymal infiltrates or pleural effusion . No pneumothorax .