Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . Due to marked scoliosis of the upper T - spine , appearance of the chest is somewhat distorted . Allowing for this , there is no convincing evidence for pneumonia , effusion or pneumothorax . Mild interstitial edema difficult to exclude given subtle interstitial prominence . Cardiomediastinal silhouette appears grossly unchanged with mild cardiomegaly and unfolded thoracic aorta . Bony structures appear grossly intact .
    OUTPUT:
    
Mild edema , mild cardiomegaly .