Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate normal lung volumes . There is no pleural effusion , focal consolidation or pneumothorax . Heart is mildly enlarged . Fullness of the AP window . Otherwise , the hilar and mediastinal silhouette is unremarkable . Mitral valve prosthesis is in place . Sternotomy wires are noted . Epicardial leads are in place , three of which appear fractured and / or disconnected . Partially imaged upper abdomen is unremarkable .
    OUTPUT:
    
Mild cardiomegaly . Clear lungs .