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Concept
Peptic ulcers are sores shaped like craters, and they develop when the digestive juices produced by the stomach erode or eat away the lining of the digestive tract. Peptic ulcers may form in the lining of the stomach (gastric ulcers) or just below the stomach, at the start of the small intestine (duodenal ulcers). The...
Concept
Percutaneous nephrolithotomy or nephrolithotripsy uses a small incision in the person's back to remove kidney stones. The surgeon puts a hollow tube into the kidney and a probe through the tube. In nephrolithotomy, the surgeon removes the stone through the tube. In nephrolithotripsy, he or she breaks the stone up and...