Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright portable chest radiograph was provided . A right chest wall Port - A - Cath is again seen with its tip residing at the level of the low SVC . Study is underpenetrated thus limiting evaluation . Allowing for this , no definite signs of pneumonia or overt CHF . No large effusion or pneumothorax is seen . The cardiomediastinal silhouette is stable . The bony structures appear intact .
    OUTPUT:
    
Limited exam due to underpenetrated technique . No overt signs of pneumonia or CHF .