Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Assessment is limited by kyphotic positioning and low lung volumes . Heart size appears mild to moderately enlarged . Mediastinal contour is unremarkable . There is crowding of bronchovascular structures without overt pulmonary edema . Mild atelectasis is noted in the lung bases . No large pleural effusion , focal consolidation or pneumothorax is identified however assessment of the lung apices is obscured by the patient 's chin and neck projecting over this area . No acute osseous abnormalities seen .
    OUTPUT:
    
Limited study with low lung volumes and mild bibasilar atelectasis .