Mary is seated on a raised platform, surrounded by a square formation of stone-faced angels.
Portal biliopathy is characterized by biliary obstruction and is commonly caused by dilated vascular channels in the pericholedochal plexus causing choledochal varices, leading to the formation of stones in the common bile duct.
Dr. Eddy's historical research also led him to demonstrate that the wheel-like formation of stones and cairns on a Wyoming mountain top — known as the Bighorn Medicine Wheel — was a purposeful, sky-oriented arrangement of stones, a crude astronomical observatory crafted by Native American inhabitants of the Western plains.
Formation of stones may also result from injury and inflammation of the renal tubular epithelium.
Urolithiasis often involves the formation of stones containing calcium compounds, mainly calcium oxalate and calcium phosphate, which account for 70%~80% of reported cases of urolithiasis.
This substance, in turn, is thought to contribute to the formation of stones in the kidney, ureter, and bladder a strong suspect in the renal damage seen in melamine-exposed children.
Mr. Frugé said the operation relied on specialists with expertise in what is called "measurement while drilling," as well as on what he referred to as "rock doctors," geologists who have studied the underground formations of stone and sand, to know where the drill bit was at all times and where it had to go.
The principles for and the determinants of the formation of calcium stones, uric acid stones, infection stones, and cystine stones are briefly discussed in a way that should provide a necessary basis for the design of rational recurrence preventive measures.
Old walls and old churches: they're defined – celebrated – for their unchanging physicality, and yet I'd wager those same formations of stones and metal and glass have come to symbolise so many different things for those who spend their childhoods living in their shadows.
