Table 1.

Proportions of patients with or without IVLBCL lesions, based on the number of predicting factors

No. of predictive factorsIVLBCL lesion (+), n = 29IVLBCL lesion (−), n = 86RSB, % positive
0-2 49 
3-4 14 28 33.3 
5-6 15 65.2 
No. of predictive factorsIVLBCL lesion (+), n = 29IVLBCL lesion (−), n = 86RSB, % positive
0-2 49 
3-4 14 28 33.3 
5-6 15 65.2 

Predictive factors: unexplained fever, ≥38°C; alteration of consciousness; O2 saturation, ≤95%; platelet count, <120 × 109/L; serum LDH level, >800 U/L; and serum sIL2R level, >5000 U/mL.