单词	pseudocyst
释义	pseudocyst /ˈsjuːdəʊsɪst / noun Medicine A fluid-filled cavity resembling a cyst but lacking a wall or lining.Thin walled pseudocysts bulging into the stomach or duodenum can be drained endoscopically, with surgical drainage reserved for thick walled cysts and those not bulging into the bowel on endoscopy.... However, the wall of the pseudocyst, by definition, should be composed of connective tissue devoid of epithelial lining. A large pseudocyst that ruptures, becomes infected, or hemorrhages requires drainage of the cyst cavity.
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