Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Evaluation is extremely limited due to underpenetration on technique and patient body habitus . Low lung volumes accentuate the cardiac silhouette and bronchovascular structures . No evidence of pulmonary edema or focal pneumonia . No pleural effusion or acute skeletal abnormalities .
    OUTPUT:
    
Low lung volumes . No pneumonia or CHF .