Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The inspiratory lung volumes are appropriate . There is moderate dextroconvex curvature of the mid - to - lower thoracic spine with resultant asymmetry of the rib cage . The cardiac silhouette remains mildly enlarged . The thoracic aorta is tortuous , but the mediastinal contours are stable . There is partial calcification of the aortic knob . No pulmonary edema , focal consolidation , pleural effusion or pneumothorax is seen . Dense mitral valve annular calcifications are re-demonstrated .
    OUTPUT:
    
No evidence of acute heart failure or volume overload .