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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Gun, B., Gun, M. & Karamanoglu, Z. Primary Stromal Tumor of the Omentum: Report of a Case. Surg Today 36, 994–996 (2006). https://doi.org/10.1007/s00595-004-3280-9
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DOI: https://doi.org/10.1007/s00595-004-3280-9