Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . Tripolar pacer again noted with unchanged position of cardiac leads . The heart remains moderately enlarged . The aorta is markedly unfolded . Overlying EKG leads somewhat limits assessment . A subtle peripheral opacity in the right mid lung is partially obscured by an overlying pacing lead though could represent a very early pneumonia in the correct clinical setting . Otherwise lungs appear grossly clear . No large effusion or pneumothorax . Bony structures are grossly intact .
    OUTPUT:
    
Limited exam with subtle peripheral opacity in the right mid lung which could represent a pneumonia in the correct clinical setting . Stable cardiomegaly