Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . This accentuates the size of cardiac silhouette which appears mildly enlarged . The aorta is tortuous . There is no pulmonary edema . Patchy opacities are noted in the lung bases , possibly reflective of atelectasis though infection or aspiration can not be excluded . Small left pleural effusion may be present . No right - sided pleural effusion or pneumothorax is identified , though assessment of the right apex is somewhat limited due to the patient 's chin obscuring this region . There are no acute osseous abnormalities .
    OUTPUT:
    
Low lung volumes . Patchy bibasilar airspace opacities may reflect atelectasis though infection or aspiration can not be excluded . Possible trace left pleural effusion .