Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right upper lobe opacity is compatible patient 's known mass . Bilateral pulmonary nodules seen on prior CT were better characterized on yesterday 's exam . There are small bilateral effusions . Left greater than right hazy parenchymal opacities are also again noted . Moderate hiatal hernia is seen . Compression deformities in the lower thoracic and upper lumbar region are unchanged . Osseous metastases are also better seen on prior CT .
    OUTPUT:
    
No significant change since yesterday 's exam . Right upper lobe mass again noted . Bilateral parenchymal opacities which may be due to pulmonary edema although atypical infection or reaction to chemotherapy are other possible etiologies .