Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest show normal lung volumes without consolidation or nodule . There is no pleural effusion or pneumothorax . Heart size is mildly enlarged since ___ , this enlargement might be due to recent pericarditis .
    OUTPUT:
    
Mild heart enlargement , likely related to recent pericarditis , no pleural effusion or signs of pneumonia .