Whole-body magnetic resonance imaging provides accurate staging of diffuse large B-cell lymphoma, but is less preferred by patients

Table 4 Comparison of negative and positive lymph nodes by their long axis and short axis diameters and derived values (product and ratio of long axis and short axis), presence of fatty hilum, and signal intensity on diffusion weighted images with background suppression

	Negative LN regions (n = 127) median (IQR)	Positive LN regions (n = 27) median (IQR)	P value	AUC (95%CI)	P value
Long axis (mm)	17 (12-21)	28 (22-36)	< 0.0001	0.87 (0.80 to 0.95)	< 0.0001
Short axis (mm)	7 (6-8)	14 (10-25)	< 0.0001	0.87 (0.79 to 0.96)	< 0.0001
LA × SA (mm × mm)	120 (72-161)	420 (210-936)	< 0.0001	0.89 (0.81 to 0.97)	< 0.0001
LA: SA	2.3 (1.8-2.8)	1.8 (1.5-2.3)	0.0039	0.68 (0.56 to 0.81)	0.0032
Fatty hilum (0-3)1	1 (0.0-2.3)	0 (0-1)	0.0015	0.69 (0.58 to 0.79)	0.0023
DWIBS (0-3)	2 (2-3)	3 (3-3)	< 0.0001	0.71 (0.62 to 0.80)	0.00059

¹Fatty hilum: 0: Absent and 3: Present.

LN: Lymph node; LA: Long axis; SA: Short axis; DWIBS: Diffusion weighted imaging with background suppression; AUC: Area under curve; IQR: Interquartile range; CI: Confidence interval.