Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest are compared to previous exam from ___ and ___ . The lungs are clear of confluent consolidation or effusion . Cardiac silhouette is enlarged but stable . Osseous and soft tissue structures are unremarkable . Nodular density over the left lung base suggestive of a nipple shadow .
    OUTPUT:
    
No definite acute cardiopulmonary process . Cardiomegaly . No pneumothorax .