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gastrectomy
A gastrectomy is a partial or full surgical removal of the stomach.
==Indications==
Gastrectomies are performed to treat cancer and perforations of the stomach wall.
In severe duodenal ulcers it may be necessary to remove the lower portion of the stomach called the pylorus and the upper portion of the small intestine called the duodenum. If there is a sufficient portion of the upper duodenum remaining a gastroduodenostomy is performed, where the remaining portion of the stomach is reattached to the duodenum before the bile duct and the duct of the pancreas. If the stomach cannot be reattached to the duodenum a gastrojejunostomy is performed, where the remaining portion of the duodenum is sealed off, a hole is cut into the next section of the small intestine called the jejunum and the stomach is reattached at this hole. As the pylorus is used to grind food and slowly release the food into the small intestine, removal of the pylorus can cause food to move into the small intestine faster than normal, leading to gastric dumping syndrome.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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