Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate cardiac enlargement is unchanged . The aortic knob remains calcified . Mediastinal and hilar contours are normal , and the pulmonary vascularity is not engorged . While there is minimal blunting of the right costophrenic angle posteriorly which could suggest a tiny pleural effusion , no focal consolidation or pneumothorax is identified . There is no acute osseous abnormalities . A compression deformity of a lower thoracic vertebral body is unchanged .
    OUTPUT:
    
Possible tiny right pleural effusion . Otherwise no acute cardiopulmonary abnormality .