Table 3.

Interrater agreement criteria.

	Kappa
Radiological ECS assessment	0.59 (0.43–0.75)
Indistinct nodal margins	0.10 (0.3–0.23)
Infiltration into adjacent tissues	0.51 (0.33–0.69)
Irregular nodal enhancement	0.37 (0.19–0.55)
Matted nodes	0.50 (0.28–0.72)
Central necrosis	0.74 (0.61–0.88)

ECS: extracapsular spread.