Table 1.

Criteria for benign and malignant nodes on T2-weighted MRI

Confidence Level	Criteria
0	size < 5 mm + regular border/shape + homogeneous signal pattern
1	size < 5 mm + irregular border/shape or heterogeneous signal pattern
2	size > 5 or irregular border/shape or heterogeneous signal pattern
3	any size + irregular border/shape + heterogeneous signal pattern
4	size > 5 mm + irregular border/shape + heterogeneous signal pattern