Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . Previously noted lines and tubes have been removed . There is no focal consolidation , effusion , or pneumothorax . The cardiomediastinal silhouette mildly prominent , unchanged . Imaged osseous structures are intact . Prominent costochondral calcification noted projecting over the right lower lung .
    OUTPUT:
    
Stable mild cardiomegaly . No signs of edema .