Table 2.
The MRI features of the 50 patients according to 1p/19q codeletion and IDH mutation
| Total, n (%) | 1p/19q Codeletion, n (%) |
IDH Mutation, n (%) |
|||||
|---|---|---|---|---|---|---|---|
| Yes | No | P | Yes | No | P | ||
| Topography | |||||||
| Frontal | 35 (70) | 32 (82) | 3 (27) | .001 | 33 (77) | 2 (28) | .02 |
| Temporal | 8 (16) | 5 (13) | 3 (27) | NS | 7 (16) | 1 (14) | NS |
| Parietal | 3 (6) | 1 (2) | 2 (18) | NS | 1 (2) | 2 (28) | .05 |
| Occipital | 3 (6) | 1 (2) | 2 (18) | NS | 2 (5) | 1 (14) | NS |
| Insula | 18 (36) | 13 (33) | 5 (45) | NS | 15 (35) | 3 (43) | NS |
| Corpus callosum | 15 (30) | 13 (33) | 2 (18) | NS | 14 (32) | 1 (14) | NS |
| Extension | |||||||
| Unilobar | 32 (64) | 25 (64) | 7 (64) | NS | 28 (65) | 4 (57) | NS |
| Multilobar | 18 (36) | 14 (36) | 4 (36) | NS | 15 (35) | 3 (43) | NS |
| Contrast enhancement | |||||||
| No | 13 (26) | 12 (31) | 1 (10) | NS | 12 (28) | 1 (15) | NS |
| Yes | 37 (74) | 27 (69) | 10 (90) | NS | 31 (72) | 6 (85) | NS |
| Blurry | 9 (18) | 9 (23) | 0 (0) | NS | 9 (21) | 0 (0) | NS |
| Nodular | 17 (34) | 11 (28) | 6 (54) | NS | 15 (35) | 2 (28) | NS |
| Ringlike | 11 (22) | 7 (18) | 4 (36) | NS | 7 (16) | 4 (57) | .03 |
| Tumoral borders | |||||||
| Sharp | 19 (38) | 15 (39) | 4 (36) | NS | 17 (41) | 2 (28) | NS |
| Indistinct | 30 (62) | 23 (60) | 7 (63) | NS | 25 (59) | 5 (72) | NS |
| Intratumoral signal | |||||||
| Heterogeneous T1 | 42 (84) | 35 (89) | 7 (63) | P = .06 | 33 (77) | 5 (45) | NS |
| Heterogeneous T2 or FLAIR | 37 (74) | 33 (84) | 4 (36) | P = .003 | 34 (79) | 3 (43) | P = .06 |
| Other | |||||||
| Intratumoral cyst | 14 (28) | 13 (33) | 1 (9) | NS | 14 (32) | 0 (0) | NS |
| Median volume (cm3) | 108 | 120 | 70 | P = .06 | 111 | 100 | NS |