Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are unremarkable , except for mildly tortuous thoracic aorta and an aortic valve prosthesis . Mutiple intact median sternotomy wires are present . The lung volumes are low , but no focal consolidation , pulmonary edema , pleural effusion or pneumothorax is seen . Right sided nipple shadow is noted overlying the right lower hemithorax .
    OUTPUT:
    
No acute cardiopulmonary pathology .