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Journal of Korean Neurosurgical Society 1987;16(2): 397-410.
Atypical C-T Features of Intracranial Meningiomas and Pathological Correlation.
Jin Sup Choi, Woo Yong Park, Sang Yeol Yoon, Chang Gu Kang, Dong Hee Kim, Dae Jo Kim
Department of Neurosurgery, Maryknoll Hospital, Pusan, Korea.
Most intracranial meningiomas present on the C-T as typical features with homogeneous, occasionally lobulated mass of density equal or greater than of surrounding brain tissue. After contrast injection, there is uniform and homogeneous enhancement in the density. Infrequently a significant number present as atypical features which are regional inhomogenecity of tumor mass on C-T and common source of error in the diagnosis of meningioma. The authors reviewed 25 consecutive meningiomas, all confirmed pathologically. 7 cases have been encountered as atypical features on the C-T. Among them, 2 cases of peritumoral low density were diagnosed as meningioma with C-T only. 5 cases(2 cases of peritumoral cyst, 2 cases of intratumoral cyst, 1 case of peritumoral bleeding) were misdiagnosed initially as malignant lesion based on C-T findings. Those C-T patterns have been found to correlate with certain histologic and morphologic alternation in tumor anatomy. Close correlation with pathological findings of tumor necrosis, cystic changes and hemorrhage was noted.
Key Words: Meningioma; Atypical Features of the C-T; Pathological Findings; Correlation
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