Qualitative analysis of morphologic MR imaging signs (n=147)
| MR Imaging Sign | EGFR Status* | P Value | |
|---|---|---|---|
| Not Amplified (n=87) | Amplified (n=60) | ||
| Sharp borders | .23 | ||
| Absent | 45 (52) | 37 (62) | |
| Present | 42 (48) | 23 (38) | |
| Cystic and/or necrotic | .12 | ||
| Absent | 2 (2) | 5 (8) | |
| Present | 85 (98) | 55 (92) | |
| T2 isointense | .38 | ||
| Absent | 74 (85) | 54 (90) | |
| Present | 13 (15) | 6 (10) | |
| Diffusion restricted | .04 | ||
| Absent | 68 (79) | 38 (63) | |
| Present | 18 (21) | 22 (37) | |
| Hemorrhage | .87 | ||
| Absent | 36 (41) | 24 (40) | |
| Present | 51 (59) | 36 (60) | |
| Subependymal enhancement | .58 | ||
| Absent | 74 (85) | 49 (82) | |
| Present | 13 (15) | 11 (18) | |
| Multifocal | .52 | ||
| Absent | 58 (67) | 43 (72) | |
| Present | 29 (33) | 17 (28) | |
↵* Reported as n (%) with P values derived from the χ2 test or the Fisher exact test.