Gastric Schwannoma Diagnosed by Endoscopic Ultrasonography-Guided Trucut Biopsy
作者： Sung Wook Hong , Won Young Cho , Jin-Oh Kim , Chang Gyun Chun , Kwang Yeun Shim
关键词: Stromal cell 、 Pathology 、 Medicine 、 Endoscopic ultrasound 、 Gastric Schwannoma 、 Radiology 、 Endoscopic ultrasonography 、 Immunohistochemistry 、 Trucut biopsy 、 Muscle layer 、 Fine-needle aspiration
摘要: Schwannomas of the gastrointestinal (GI) tract are rare subepithelial tumors comprising approximately 3.3% to 12.8% all mesenchymal GI tract. On endoscopic ultrasound (EUS) they seen as hypoechoic arising most commonly from 4th proper muscle layer. Although EUS helps distinguish tumor characteristics, tissue sampling is required for differentiation with other more common such stromal tumors. Both EUS-guided fine needle aspiration and trucut biopsy (EUS-TCB) can be used sampling. However, only EUS-TCB allows core a high yield immunohistochemical staining. We report case gastric schwannoma diagnosed by EUS-TCB.
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