case_images: PMC3457717_01
case_images: MRI scan demonstrates the recurred tumor mostly involved right posterior fossa.
case_images: CRIM2012-628756.001.jpg
case_images: PMC3457717_01_CRIM2012-628756.001.jpg
case_images: fig1
case_images: CT (Figure 1) showed the recurrent tumor at original torcular site was increased in size. Craniotomy with total excision of the tumor was done. 
case_images: Histology and immunohistochemistry of meningeal hemangiopericytoma. (a) H&E 20x A hypercellular tumor with staghorn blood vessels. (b) Immunostaining of CD99 is diffuse and strong positive. (c) Immunostaining of CD 34 reveals variable positive.
case_images: CRIM2012-628756.002.jpg
case_images: PMC3457717_01_CRIM2012-628756.002.jpg
case_images: fig2
case_images: Staghorn or ectatic blood vessels are seen in some areas (Figure 2(a)). Immunohistochemically the neoplastic cells characteristically express diffusely CD99 (Figure 2(b)) and bcl2 and variable CD34 (Figure 2(c)), whereas no immunoreactivity was seen for EMA or progestogen receptor.