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TABLE 1: MR imaging characteristics of tumefactive demyelinating lesions and glioma patients
Patient No. Age (y)/Sex Lesion Lesion Size (cm) Enhancement Edema Mass Effect Necrosis/Cystic Degeneration Lesion Delineation Heterogeneity Additional Lesions
1 50/F TDL 2.9 50% +++ + Yes Ill Yes No
2 46/F TDL 1.7 30% − − No Well No Yes
3 25/M TDL 1.8 10% + + Yes Ill Yes Yes
4 57/M TDL 1.2 <5% + − Yes Ill Yes Yes
5 41/F TDL 2.8 <5% + + No Ill No No
6 49/F TDL 2.1 30% + + Yes Well No No
7 51/M AA 2.7 50% ++ ++ Yes Intermediate Yes Yes
8 39/M AA 1.4 90% + + No Ill Yes Yes
9 44/M AO 4.3 50% +++ +++ Yes Ill Yes No
10 28/M AA 1.9 90% + + No Ill No Yes
11 38/M AMG 1.4 90% ++ + No Intermediate No No
12 38/M AA 1.7 10% + + Yes Ill Yes Yes
13 80/M AMG 3.5 80% + ++ Yes Well Yes No
14 25/F AA 4.8 50% ++ ++ Yes Ill Yes No
15 60/M GBM 2.3 80% + + Yes Ill Yes Yes
16 34/M GBM 5.2 50% +++ +++ Yes Ill Yes Yes
Note.—TDL indicates tumefactive demyelinating lesion; AA, anaplastic astrocytoma; AO, anaplastic oligodendroglioma; AMG, anaplastic mixed glioma; GBM, glioblastoma multiforme.