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Surgical Case Reports
Fig. 5 | Surgical Case Reports

Fig. 5

From: Radical resection of a giant retroperitoneal calcifying fibrous tumor combined with right hepatectomy and reconstruction of the inferior vena cava and bilateral renal veins

Fig. 5

Histological findings and immunohistochemical studies. a H&E stain (× 20) shows a whorled bundle of collagen fiber and hyalinized stroma with hypocellular spindle cells. Infiltration of inflammatory cells is observed along small vessels. b IgG4 immunohistochemical stain (× 20) shows numerous IgG4-positive plasma cells

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