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Fig. 2 | Surgical Case Reports

Fig. 2

From: Leiomyosarcoma of the transverse colon with lymph node metastasis and malignant transformation: a case report

Fig. 2

Microscopic and immunohistological findings. a Hematoxylin–eosin staining (×40). Spindle-cell proliferation with acidophilic endoplasmic reticula was observed in the deep portion to the inside of the specimen’s mucosa, and the resected margin was positive. b Hematoxylin–eosin staining (×200). Cells with slight nuclear atypia were found, but there was no clear mitotic activity. c Positive for α-smooth muscle actin (×100). d Negative for c-kit (×100). e Negative for CD34 (×100) f Negative for the S-100 protein (×100). g Positive for desmin (×40). h Positive for h-caldesmon (×40). i Ki-67 labeling shows a few positive cells

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