Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison to the chest radiographs obtained ___ , no significant changes are appreciated . Lungs are fully expanded and clear without focal consolidation or suspicious pulmonary nodules . No pleural effusions . Mild cardiomegaly is unchanged without pulmonary vascular congestion or pulmonary edema . Descending thoracic aorta is tortuous , but unchanged . Median sternotomy wires are well aligned and intact .
    OUTPUT:
    
No radiographic evidence of pneumonia , intrathoracic malignancy , or other acute cardiopulmonary abnormalities .