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.