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Journal of Korean Neurosurgical Society 1997;26(7): 940-945.
Factors Influencing the Development of Peritumoral Brain Edema in Menigiomas.
Ig Soo Kim, Hyung Dong Kim, Ki Uk Kim, Hyun Chul Shin, Hyu Ji Choin, Kyu Hong Kim
Department of Neurosurgery, College of Medicine, Dong-A University, Pusan, Korea.
In a series of 43 patients with intracranial meningioma, we retrospectively analysed factors influencing the development of peritumoral brain edema(PTBE). The extent of this was measured by the Edema Index(EI), obtained from the size of the meningioma and associated PTBE on a T2-weighted magnetic resonance image. We evaluated the relationship between EI and certain factors that may play a role in the development of PTBE ; namely age, size, location, and histology of the tumor, and its vascular supply(intrinsic cerebral artery or meningeal artery). Tumors in the frontal and sphenoid ridge regions tended to be associated with more extensive PTBE than these in the parietal, occipital, and infratentorial regions(p<0.05). In particular, the extent of infratentorial meningioma-associated PTBE tended to be slight. Histologically, PTBE associated with meningotheliomatous and transitional meningiomas tended to be more extensive than that associated with the fibroblastic meningiomas(p<0.05). On angiography, it was seen that for meningiomas supplied by intrinsic cerebral artery(internal carotid or veterbral artery only, or in conjunction with the meningeal artery), correlation with severe PTBE was higher than for those supplied by the meningeal artery only(p<0.05). We concluded, therefore, that location, histology, and vascular supply from the intrinsic cerebral arteries were the factors influencing PTBE.
Key Words: Edema index; Meningioma; Peritumoral brain edema; Vascular supply
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