Abstract
High-resolution endoscopic ultrasound (hr-EUS) with miniprobes performed during diagnostic endoscopy yields information on invasion depth of early cancer and on lesions arising in intramural echo structures. This chapter explains the diagnostic characteristics of hr-EUS images of early mucosal neoplasias and of the most prevalent types of intramural tumors. Imaging by hr-EUS characterizes subepithelial tumors for size, invasiveness, and wall layer of origin, and distinguishes superficial mucosal neoplasias from deeply submucosa-invasive early cancer with about 90% accuracy in most locations of the GI tract. Hr-EUS imaging should be available when the decision is taken between endoscopic or surgical resection for subepithelial tumors or for superficial versus submucosa-invasive early cancer.
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Seifert, H., Kikuchi, D., Yahagi, N. (2019). High-Resolution Endoscopic Ultrasound: Clinical T-Staging of Superficial and Subepithelial Gastrointestinal Neoplasias. In: Berr, F., Oyama, T., Ponchon, T., Yahagi, N. (eds) Atlas of Early Neoplasias of the Gastrointestinal Tract. Springer, Cham. https://doi.org/10.1007/978-3-030-01114-7_5
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