Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . Underpenetration due to large body habitus limits assessment . Cardiomegaly is again noted . Mild to moderate pulmonary edema is difficult to exclude given underpenetrated technique . No convincing sign of pneumothorax . No acute bony abnormality .
    OUTPUT:
    
Limited exam due to underpenetration . Stable cardiomegaly with probable mild to moderate pulmonary edema . Repeat with more optimized technique may result in more accurate assessment .