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Histopathological examination. a, b) Histopathological examination of the tumor specimen shows a proliferation of spindle-shaped cells with eosinophilic cytoplasm and fibers (H&E). No evidence of mitotic figures or atypia was seen. c, d) Immunohistochemistry revealed positive staining for smooth muscle actin (c) and negative staining for Ki-67 (d). The tumor was diagnosed as a leiomyoma.
