Primary Stromal Tumor of the Omentum: Report of a Case |
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Authors: | Banu Dogan Gun Mustafa Ozkan Gun Ziya Karamanoglu |
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Affiliation: | (1) Department of Pathology, Faculty of Medicine, Zonguldak Karaelmas University, Tıp Fakültesi Patoloji AD, Kozlu, 67600 Zonguldak, Turkey;(2) Department of Pathology, Zonguldak SSK City Hospital, Zonguldak, Turkey;(3) Department of General Surgery, Zonguldak SSK City Hospital, Zonguldak, Turkey |
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Abstract: | We report the case of a primary extragastrointestinal stromal tumor (EGIST) found in the omentum of a 65-year-old woman. The resected specimen, which measured 6 cm at its largest point, consisted of an outer solid part and inner uniloculated cysts. Microscopically, the tumor was characterized by interlacing bundles of elongated spindle cells, with the nuclei showing a focal palisading pattern; however, skenoid fibers were not observed anywhere and mitoses were absent. Immunohistochemically, the tumor was negative for smooth-muscle actin, desmin, and S-100 protein, but it was positive for CD117 and CD34. The microscopic features were consistent with a gastrointestinal stromal tumor. |
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Keywords: | Stromal tumor Omentum Immunohistochemistry |
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