Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . Lung volumes are low and evaluation is somewhat limited due to underpenetrated technique likely in part due to large body habitus . The heart size appears enlarged though a component may be due to AP technique . There is no convincing evidence for pneumonia , large effusion or pneumothorax . Mild congestion difficult to exclude given technique though there is no overt edema . Bony structures are intact .
    OUTPUT:
    
Possible mild congestion . Limited exam .