Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison to the prior radiographs , there is no substantial change . Moderate cardiomegaly and mediastinal contours are stable . Hazy opacity in the posterior sulcus is unchanged and related to mild atelectasis and trace pleural effusions on the prior CT . There is no pneumothorax . H - shaped vertebral bodies are consistent with reported history of sickle cell disease .
    OUTPUT:
    
No substantial change compared to the prior examination .