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胃・十二指腸悪性狭窄に対するステント留置はあくまでも対症療法の1つである.ステント留置前に全身の検査を行い,ステント留置で狭窄症状の緩和が期待できる場合にのみ行うべきである.ステントは食道用に開発されたSEMSが使われている.したがって胃・十二指腸では時にステント留置が困難な場合もある.留置成功率は80~100%,食事摂取改善率は50~90%と報告されている.今後,胃・十二指腸悪性狭窄に対するステント留置適応症例は増えると思われるが,さらなる器具の改良と手技の開発が必要である.
Stenting continues to be one of the methods used for the symptomatic treatment of malignant gastro-duodenal stenosis. a general physical examination is conducted prior to stenting, which should only be performed in cases where it is expected to alleviate the symptoms of stenosis. A self-expandable metallic stent (SEMS) developed for use in the esophagus is used. However, it is sometimes difficult to place a stent in the gastro-duodenum. A placement success rate of 80 to 100% and a dietary intake improvement rate of 50 to 90% have been reported. Although the number of malignant gastro-duodenal stenosis cases suitable for stenting is likely to increase in the future, there is a need to further improve the devices used and to develop new techniques for inserting them.
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