Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral radiographs were acquired . Lung volumes are low , causing exaggeration of the heart size and accentuation of the pulmonary vasculature . Lung bases are suboptimally assessed on frontal view due to underpenetrated technique . There is minimal bibasilar atelectasis . Haziness of the right lower lateral left lung likely is secondary to underpenetration . No focal consolidations . Heart size is top normal . The mediastinal contours are normal . There are no pleural effusions . No pneumothorax is seen .
    OUTPUT:
    
Low lung volumes . Otherwise , no acute cardiac or pulmonary process .