Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since the prior radiograph , there has been no significant change . There are bilateral diffuse parenchymal opacities that are extensive and worse on the right side . Given the distribution and underlying clinical history , this most likely etiology is infectious ; however , pulmonary hemorrhage should be considered if there is accompanying coagulopathy . Pulmonary edema is less likely given the distribution and time course . There is no pleural effusion . The cardiomediastinal silhouette is unchanged .
    OUTPUT:
    
Mostly stable appearance of bilateral diffuse parenchymal opacities which are most likely infectious in etiology . Other considerations may be pulmonary hemorrhage and least likely pulmonary edema .