Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is at the upper limits of normal size to mildly enlarged . The aorta is partly calcified . The mediastinal and hilar contours appear unchanged . On the prior CT , there was a substantial hiatal hernia which is not well visualized on this examination . Small bilateral pleural effusions are present and better seen on the lateral view . The lungs are hyperinflated . Fissures are minimally thickened , which may suggest slight fluid overload . However , the lungs appear clear . Small anterior osteophytes are noted throughout the visualized thoracolumbar spine . Leftward convex curvature along the upper lumbar spine is probably similar and associated with compression deformity of an upper lumbar vertebral body that may be similar , although not optimally characterized .
    OUTPUT:
    
Slightly thickened fissures and small pleural effusions , which may suggest mild congestion or fluid overload ; otherwise unremarkable .