Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single portable AP upright view of the chest was obtained . Moderate - to - severe cardiomegaly is again noted . Cardiomediastinal contour is unchanged . There is no pulmonary edema . In comparison to the prior study , however , there is increased opacification at the right base . There is no pleural effusion or pneumothorax . Sternotomy wires and surgical clips noted .
    OUTPUT:
    
Interval increased opacification at the right base during this short interval follow up likely represnts aspiration in the setting of patient 's know history of esophageal dysmotility .