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TABLE 2: MR spectroscopy characteristics of tumefactive demyelinating lesions and glioma patients
Patient No. Lesion Enhancing Region Central Region Perilesional T2 Region Contralateral Normal Brain
Cho/Cr NAA/Cr Lac Cho/Cr NAA/Cr Lac Cho/Cr NAA/Cr Lac Cho/Cr NAA/Cr Lac
1 TDL 4.6 1.0 ++ 3.5 1.0 ++ 1.7 1.2 + 0.5 1.6 −
2 TDL 1.8 1.9 + 3.0 3.2 ++ 1.6 2.9 + 0.9 1.6 −
3 TDL 1.7 0.7 − 4.9 2.3 + 1.9 1.2 − 0.7 1.6 −
4 TDL 2.4 1.3 − 3.3 2.7 − 1.5 0.3 − 0.8 2.0 −
5 TDL 2.8 1.9 − 1.6 2.5 − 1.4 2.6 − 1.4 3.0 −
6 TDL 1.7 1.7 + 2.3 1.4 − 1.1 1.7 − 0.9 1.9 −
7 AA 3.3 1.2 − 1.5 1.2 − 1.8 2.0 − 0.5 1.7 −
8 AA 3.3 0.7 − 9.0 1.1 − 1.0 0.9 − 0.7 1.2 −
9 AO 0.9 0.7 − 2.1 1.1 − 1.3 0.9 + 0.9 1.1 −
10 AA 4.3 0.9 − 3.8 0.8 − 2.0 1.4 − 0.7 1.7 −
11 AMG 2.5 0.6 − 2.5 0.6 − 2.0 1.3 − 1.6 3.6 −
12 AA 1.3 0.6 − 1.6 0.5 − 1.2 0.9 − 0.9 1.4 −
13 AMG 10.3 0.8 + 11.3 1.6 − 1.2 2.1 + 0.8 2.0 −
14 AA 12.7 0.6 − 4.7 0.8 + 1.5 1.3 − 1.1 1.5 −
15 GBM 1.8 0.7 − 2.2 0.9 − 1.5 1.2 − 1.0 1.5 −
16 GBM 10.0 1.0 − 4.4 0.8 − 2.3 1.0 − 1.2 2.1 −
Note.—TDL indicates tumefactive demyelinating lesion; AA, anaplastic astrocytoma; AO, anaplastic oligodendroglioma; AMG, anaplastic mixed glioma; GBM, glioblastoma multiforme.