Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Aside from a small region of plate like atelectasis in the middle lobe the lungs are clear without focal consolidation , pleural effusion or pneumothorax . The pulmonary vasculature is not engorged and there is no overt pulmonary edema . The cardiomediastinal and hilar contours are within normal limits . The trachea is midline . Mild degenerative changes of the bilateral acromioclavicular joints is noted .
    OUTPUT:
    
No acute cardiopulmonary process .