Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are markedly low . This accentuates the cardiac and mediastinal contours , with the heart size appearing borderline enlarged . Crowding of the bronchovascular structures is present without overt pulmonary edema . Patchy opacities in the lung bases likely reflect areas of atelectasis in the setting of low lung volumes . No pleural effusion or pneumothorax is clearly identified . Loss of height of a low thoracic vertebral body is of indeterminate age . No displaced rib fractures are demonstrated , though the left lateral chest wall is not completely included in the field of view .
    OUTPUT:
    
1 . Markedly low lung volumes limit assessment of the lung bases . Patchy opacities in the lung bases likely reflect areas of atelectasis , though infection or aspiration can not be excluded in the correct clinical setting . 2 . Limited assessment of the left lateral chest wall , though no grossly displaced rib fractures are seen . 3 . Mild compression deformity of a low thoracic vertebral body of indeterminate age , and clinical correlation is needed .