Hemangioblastoma: clinicopathologic analyses of 40 cases / 临床与实验病理学杂志

ABSTRACT

Purpose To analyze the clinicopathologic features, immunophenotypes, image features and diagnosis of hemangioblastoma.Methods The clinical and pathological features were studied with HE and immunohistochemical staining in 40 cases of hemangioblastoma.The image features were studied with CT and MRI.Results The clinical symptoms of these cases were dizziness,headache,vomitting, optic disc edema and ataxia. The CT and MRI showed a sharply demarcated tumor with cystic areas and a solid mural nodule. After enhancement scanning, the mural nodule was usually enhanced and the wall of the cystic area was not. Histopathologically, this tumor was characterized by two main components capillary and stromal cells. Immunohistochemically, the endotheliocyte was positive for CD34 and FⅧRAg, but most of the stromal cells were positive for S-100 and part of the cells were also positive for NSE. The endotheliocyte and the stromal cell were all positive for vimentin, but negative for GFAP, EMA and p53. The expression of Ki-67 was very low.Conclusions Hemangioblastoma is characterized by stromal cells and numerous capillary, but the origin of the stromal cell is not clear. Its image features have some characteristics. It needs to be distinguished from pilocytic astrocytoma, angiomatous meningioma and renal carcinoma.