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  • Title: Transnasal endoscope-assisted endoscopic submucosal dissection for gastric adenoma and early gastric cancer in the pyloric area: a case series.
    Author: Ahn JY, Choi KD, Choi JY, Kim MY, Lee JH, Choi KS, Kim DH, Song HJ, Lee GH, Jung HY, Kim JH.
    Journal: Endoscopy; 2011 Mar; 43(3):233-5. PubMed ID: 21165828.
    Abstract:
    Endoscopic submucosal dissection (ESD) is an important therapeutic option for gastric adenoma and early gastric cancer (EGC). However, ESD is technically difficult when lesions are located in the pyloric area. Our aim was to introduce the transnasal endoscope-assisted ESD method, which provides for excellent cutting-line visualization through control of submucosal traction. A total of eight patients with gastric adenoma or EGC located in the pyloric area were consecutively enrolled. A primary operating endoscope was used to perform marking, incision, submucosal dissection, and hemostasis, while a thinner, transnasal endoscope operated by a second endoscopist was used to retract connective submucosal tissue to provide cutting-line visualization using V-shaped grasping forceps. En bloc resection was achieved in all eight cases, as was complete resection. The median longest lesion diameter was 19 mm (range: 12-25 mm), and the median procedure time was 37.5 minutes (range: 29-59 minutes). There were no incidents of significant bleeding or perforation. Transnasal endoscope-assisted ESD was useful for treating gastric neoplasms in the pyloric area. The procedure was relatively easy and safe, provided excellent visualization through tissue retraction, and allowed for complete en bloc resection.
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