イセキ　ヒロシ   Iseki Hiroshi   伊関　洋    所属   医学研究科 医学研究科 (医学部医学科をご参照ください)    職種   特任顧問
論文種別	原著
言語種別	英語
査読の有無	査読あり
表題	1H-MRS of intracranial meningiomas: What it can add to known clinical and MRI predictors of the histopathological and biological characteristics of the tumor?
掲載誌名	正式名：Clinical neurology and neurosurgery 略　 称：Clin Neurol Neurosurg ISSNコード：03038467 1872-6968(Electronic)
巻・号・頁	113(3),pp.202-212
著者・共著者	CHERNOV Mickhail, KASUYA Hidetoshi, NAKAYA Kotaro, KATO Koichi, ONO Yuko, YOSHIDA Shigeru, MURAGAKI Yoshihiro, SUZUKI Takashi, ISEKI Hiroshi, KUBO Osami, HORI Tomokatsu, OKADA Yoshikazu, TAKAKURA Kintomo
発行年月	2011/04
概要	OBJECTIVE:The main goal of the present study was evaluation of proton magnetic resonance spectroscopy (¹H-MRS) in diagnosis of histopathologically aggressive intracranial meningiomas.METHODS:Single-voxel ¹H-MRS of 100 intracranial meningiomas was performed before their surgical resection. Investigated metabolites included mobile lipids, lactate, alanine, N-acetylaspartate (NAA), and choline-containing compounds (Cho). According to criteria of World Health Organization (WHO) 82 meningiomas were assigned histopathological grade I, 11 grade II, and 7 grade III. The MIB-1 index varied from 0% to 27.3% (median, 1.6%). In 43 cases tight adhesion of the tumor to the pia mater or brain tissue was macroscopically identified at surgery. The consistency of 49 meningiomas was characterized as soft, 26 as hard, and 25 as mixed.RESULTS:No one metabolic parameter had statistically significant association with histopathological grade and subtype, invasive growth, and consistency of meningioma. Univariate statistical analysis revealed greater ¹H-MRS-detected Cho content (P=0.0444) and lower normalized NAA/Cho ratio (P=0.0203) in tumors with MIB-1 index 5% and more. However, both parameters lost their statistical significance during evaluation in the multivariate model along with other clinical and radiological variables. It was revealed that non-benign histopathology of meningioma (WHO grade II/III) is mainly predicted by irregular shape (P=0.0076) and large size (P=0.0316), increased proliferative activity by irRESULTS:regular shape (P=0.0056), and macroscopically invasive growth by prominent peritumoral edema (P=0.0021).CONCLUSION:While ¹H-MRS may be potentially used for the identification of meningiomas with high proliferative activity, it, seemingly, could not add substantial diagnostic information to other radiological predictors of malignancy in these tumors.
DOI	10.1016/j.clineuro.2010.11.008
文献番号	21144647