Incidence (%) of MR imaging findings in the necks of patients with head and neck cancers by consensus of 2 radiologists
| Vanishing Border Sign* (T1WI) | Flare Sign* (fsT2WI) | Shaggy Margin* (CET1WI) | ||||
|---|---|---|---|---|---|---|
| Present | Absent | Present | Absent | Present | Absent | |
| ENS (+) | 91 | 6 | 90 | 7 | 97 | 0 |
| ENS (−) | 10 | 33 | 8 | 35 | 12 | 31 |
| Total | 101 | 39 | 98 | 42 | 109 | 31 |
Note:—T1WI indicates T1-weighted imaging; fT2WI, fat-suppressed T2-weighted imaging; CET1WI, gadolinium-enhanced T1-weighted imaging.
* The incidence of MR imaging criteria is significantly different between ENS (+) and ENS (−) necks (P < .0001, Fisher exact test).