Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single portable frontal view of the chest shows no pleural effusion , pneumothorax or focal airspace consolidation . Apparent elevation of the left hemidiaphragm is secondary to positioning . The cardiac silhouette is mild to moderately enlarged but unchanged . Dense calcifications are seen within the mitral anulus . The mediastinal and hilar structures are unremarkable .
    OUTPUT:
    
No acute cardiopulmonary process .