Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The aorta is mildly unfolded but unchanged . Mediastinal and hilar contours are unremarkable . Pulmonary vasculature is not engorged . Elevation of the right hemidiaphragm is unchanged with continued blunting of the right costophrenic angle compatible with a small pleural effusion , as seen on the previous MRI , and perhaps minimally decreased in size . There is associated right basilar atelectasis . Left lung is clear . No pneumothorax or left - sided pleural effusion is present . Mild degenerative changes are seen in the thoracic spine .
    OUTPUT:
    
Persistent small right pleural effusion , perhaps minimally decreased in size from the prior MRI , with associated right basilar atelectasis .