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Histopathologic and Immunohistochemical Analysis of 66 Cases of Gastrointestinal Stromal Tumor

Journal of Biosciences and Medicines 2023年第6期11卷 140-147页

作者： Tianzhi Zhang Chao Liang Danting Su Department of Pathology The Seventh Affiliated Hospital of Sun Yat-sen University Shenzhen China

Background and Objective: To investigate the histopathological characteristics and immunohistochemistry of gastrointestinal stromal tumors (GIST). Immunohistochemistry (IHC) refers to the expression and meaning of CD117, DOG-1, CD34. Methods: Sixty-six gastrointestinal stromal tumor (GIST) samples with complete clinical data and definite clinicopathological diagnosis were collected from the Seventh Affiliated Hospital of Sun Yat-sen University from January 2019 to December 2022. Retrospective analysis was performed on the pathological data of 66 patients with GIST, and the histopathology and IHC were analyzed and summarized. Results: Among the 66 cases, 46, 14, 1, 5 were found in the stomach, small intestine, large intestine, and gastroenteral area. There were 45 cases (97%), 11 cases (79%), 1 case (100%), 5 cases (100%) in order of fusiform cell type. There were 1 case (3%), 2 cases (14%), 0 case, 0 case of upper dermatiform;Mixed type in 0 case, 1 case (7%), 0 case, 0 case;CD117 positive 66 cases (100%), DOG-1 positive 66 cases (100%), CD34 positive 61 cases (92%), CD117 and/or CD34 negative 5 cases (8%);CD34, CD117 and DOG-1 were negative simultaneously in 0 case. 19 cases (28%) were positive for SMA and 7 cases (11%) were positive for S-100. Conclusion: Fusiform cell type is the common type of GIST, followed by epithelioid type and mixed type, but the tumor sites are different, and the comparison cases are not completely the same. CD117, DOG-1 and CD34 are high surface in GIST, and the combination of SMA, S-100 and histomorphology can be used to diagnose most GIST.

关键词： Gastrointestinal Stromal Tumor immunological organization CD117 DOG-1 CD34

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