The Endoscopic Ultrasonographic Survey of Benign Mesenchymal Tumor in Upper Gastrointestinal Tract
2007
Background/Aims: A gastrointestinal mesenchymal tumor contains a leiomyoma and gastrointestinal stromal tumor (GIST). The natural course can vary according to the histology and other characteristics. This study evaluated the natural course of a benign mesenchymal tumor in the upper gastrointestinal tract using endoscopic ultrasonography (EUS). Methods: Submucosal mesenchymal tumors are considered benign according to the following criteria of EUS: 1) the tumor originates from the muscularis mucosa or muscularis propria; 2) is well demarcated, homogenous and hypoechoic; and 3) has a regular surface. In this study, the changes of size, internal echo pattern and marginal regularity were evaluated retrospectively in 26 lesions that all were
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