Fig. 2From: Primary endodermal hemangiopericytoma/solitary fibrous tumor of the cervical spine: a case report and literature reviewHE staining and IHC staining of tumor tissue. A Tumor cells were arranged in sheets and rich in blood vessels as shown in HE staining image. B–F Immunohistochemical study showing CD34 positive diffusely, β-catenin and CD31 vessels positive, SMA positive, Ki-67 15% positive. HE Hematoxylin and eosin, IHC immunohistochemicalBack to article page