Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . Mild cardiomegaly is similar to prior . Cardiomediastinal contours are stable . Opacity in the medial retrocardiac region is compatible with a hiatal hernia , which was present on ___ chest CT . The pulmonary vasculature is indistinct , compatible with mild pulmonary edema . No substantial pleural effusion , focal consolidation , or pneumothorax . No radiopaque foreign body . Bilateral shoulder degenerative changes are similar to prior . A calcified granuloma in the right mid lung is similar to prior . Wedge deformities of two thoracolumbar vertebral bodies are similar to prior .
    OUTPUT:
    
Mild pulmonary edema . Small hiatal hernia .