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題 名 | 20-MHz Ultrasonic Probe to Identify Early Gastric Cancer Suitable for Endoscopic Mucosal Resection=以20MHz高頻內視鏡超音波鑑別適用內視鏡黏膜切除術治療之早期胃癌 |
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作 者 | 許博翔; 鄭斌男; 張玉川; 簡崇和; 林錫璋; | 書刊名 | Journal of Medical Ultrasound |
卷 期 | 6:4 1998.12[民87.12] |
頁 次 | 頁169-174 |
分類號 | 416.3 |
關鍵詞 | 內視鏡超音波; 內視鏡黏膜切除術; 早期胃癌; Endoscopic mucosal resection; Endoscopic ultrasound; Endoscopic ultrasonic probe; Early gastric cancer; |
語 文 | 英文(English) |
英文摘要 | Background: Early gastric cancers (EGCs) are defined as those with malignant growths in the mucosa (Tlm) and submucosa (Tlsm). Tlm can be treated by endoscopic mucosal resection (EMR), thus avoiding gastrectomy. The aim here was to determine whether the use of a 20-MHz endoscopic ultrasonic probe (EUSP) could aid in the differentiation of Tlm EGC for EMR, and Tlsm for gastrectomy. Materials and Methods: From September 1997 to February 1998, five cases of EGC were enrolled to receive tumor staging by endoscopic ultrasonography using an EUSP inserted via the biopsy channel of an endoscope. Based on the tumor size and stage, determined by use of the EUSP and categorized as Tlm or Tlsm, EMR was carried out for suitable Tlm cancers using a two-channel method. In those cases unsuitable for EMR, open surgery was performed. The resected specimens from both EMR and open surgery were submitted for histopathologic confirmatory staging. Results; Three of the five EGC cases, including two correctly staged as Tlm and one equivocally overstaged as Tlsm using the EUSP, underwent EMR. All three cases were confirmed as being Tlm by pathology and curatively resected by EMR. The remaining two cases, including one understaged on endoscopy, were both correctly staged as Tlsm using the EUSP. Conclusion: The 20-MHz EUSP is an effective aid in endoscopic staging for the depth of tumor invasion in EGC and in the selection of mucosal EGC for EMR and submucosal EGC for gastrectomy. Whenever equivocal staging is encountered using an EUSP, EMR is advised for both the diagnostic and therapeutic benefits. |
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