Abstract:

Endoscopic ultrasonography has gained a pivotal role in cancer staging for gastrointestinal malignancies because of its ability to image both the layers of the intestinal wall and peri-intestinal lymph nodes and organs. Endoscopic ultrasonography should be used after computerized tomography, positron emission tomography scanning or magnetic resonance imaging scan has shown no distant metastatic disease. The TNM classification is used for gastrointestinal system cancer staging with endoscopic ultrasonography. Endoscopic ultrasonography staging accuracy is applicable to all luminal gastrointestinal tract cancers, with an approximate T-stage accuracy of 85% and N-stage accuracy of 75%. Accurate cancer staging is needed because it provides prognostic information and guides treatment. Additionally, endoscopic ultrasonography fine-needle aspiration can be used to biopsy any malignantappearing lymph nodes, and it slightly increases the N-stage accuracy.

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