These chest X rays show pericardial calcification.
			 
This PA view demonstrate the dense white 
 pericardial calcification  particularly well seen on the diaphragmatic surface of the heart. Note that the 
 cardiothoracic ratio 
 is 50%, that is, upper limits of normal. Pericardial calcification occurs in the setting of longstanding inflammatory disease.   
Note also the 
 scoliosis of the spine. 
This lateral view demonstrates the dense 
 pericardial calcification.  It is well seen on the anterior and the diaphragmatic surfaces of the heart.