Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The mediastinal contours are unchanged with mild atherosclerotic calcification noted at the aortic arch . Paucity of pulmonary vasculature to the right upper and ___ ___ fields is noted . No pulmonary edema is seen . Streaky atelectasis is noted in the left lung base . No pleural effusion or pneumothorax is present . There are no acute osseous abnormalities .
    OUTPUT:
    
Paucity of pulmonary vascular markings within the right upper and mid lung fields could suggest ___ ___ sign . Chest CTA has been performed , and please see separate report for details . Left basilar atelectasis .