Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size continues to be enlarged , exaggerated by AP projection , but similar to most recent prior exam ; progressed since more remote prior exams . Mediastinal and hilar contours appear unremarkable . The lungs demonstrate subtle increased interstitial markings , possibly representing mild interstitial edema or chronic changes . There is a small right pleural effusion but no pneumothorax . There is no pulmonary consolidation .
    OUTPUT:
    
Cardiomegaly with minimal interstitial edema vs . chronic interstitial changes ; small right pleural effusion .