Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left basilar opacity is unchanged since ___ . Mild cardiomegaly is stable . Aortic knob is calcified . Mild pulmonary vascular congestion is stable over multiple prior studies . No pleural effusion or pneumothorax .
    OUTPUT:
    
No new finding since ___ to explain the patient 's wheezing and shortness of breath . Mild pulmonary vascular congestion and mild cardiomegaly are stable .