Turkish Neurosurgery 2014 , Vol 24 , Num 5
A Rare Pattern of Angiogenesis in Meningiomas: Glomeruloid Microvascular Proliferation
Nilufer ONAK KANDEMIR1, Zubeyde ILKE NARLI1, Murat KALAYCI2, Sukru Oguz OZDAMAR1
1Bulent Ecevit University, School of Medicine, Department of Pathology, Zonguldak, Turkey
2Bulent Ecevit University, School of Medicine, Department of Neurosurgery, Zonguldak, Turkey
DOI : 10.5137/1019-5149.JTN.8057-13.1 Glomeruloid microvascular proliferation (GMP) is a localized proliferation of vascular endothelial cells resembling a renal glomerule. The nature of cells participating in the formation of these structures remains unclear. While it is a characteristic feature of glioblastoma, it is rarely seen in other solid tumors. Presence of diffuse GMP in meningiomas is characterized by peritumoral edema and an atypical contrast uptake in radiological imaging. Due to its rare nature, a case of spinal meningioma comprising distinct GMP was presented in this study in company with literature data. Also provided a discussion on the pathogenesis of this unusual pattern of angiogenesis and its relationship with tumors biological behavior. Keywords : Meningioma, Glomeruloid microvascular proliferation, Angiogenesis, VEGF
Corresponding author : NilŘfer Onak Kandemřr