Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable semi upright AP image of the chest . The ET tube and NG tube are in adequate position . The left PICC terminates in the low SVC . There are low lung volumes . Atelectasis is seen in the left lung base . The lungs are otherwise clear . The mediastinum is widened , unchanged from prior exams . No pleural effusion or pneumothorax is seen .
    OUTPUT:
    
No acute cardiopulmonary process .