Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . Patient is markedly rotated to his right . There is no overt abnormality on this markedly limited exam . No convincing evidence for pneumonia or CHF . No large effusion or pneumothorax . Overall heart size appears normal .
    OUTPUT:
    
Limited due to patient rotation without overt abnormality . Recommend repeat with optimize technique to better assess .