Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP portable view of the chest demonstrates low lung volumes . Hilar mediastinal silhouettes are unchanged . Heart size is top - normal . Pulmonary edema and right lung opacity seen on prior studies have resolved . No focal consolidation or pleural effusion . Patient is status post medial sternotomy . Multiple surgical clips projected over the cardiomediastinal silhouette .
    OUTPUT:
    
Interval resolution of pulmonary edema and right lung base opacity .