Table 1: Characteristics of 26 adults with non-Hodgkin primary bone lymphoma.

No.%

Trial
 021973
 03727
Gender
 Male1661
 Female1039
Stage
 I2181
 II519
B symptoms
 No2181
 Yes519
Site
 Axial skeleton2059
  Spine1350
  Pelvis519
  Rib27
 Peripheral skeleton1028
  Limbs623
  Tibia14
  Humerus 14
  Scapula28
   Radius/ulna14
   Finger 14
 Skull412
  Mandible312
  Occipital14
Histology
 Diffuse, mixed, small, large415
 Diffuse, large cleaved or not1869
 Large cell immunoblastic312
  Anaplastic large-cell ANA Ki+14
Immunophenotyping
 B cells1454
 T cells14
 ANA Ki+14
 Nonassessable1038
LDH > N7/2133
PS
 0623
 11142
 2623
 3312
IPI score
 0519
 11142
 2311
 327
 Non-assessable519

LDH: lactatedehydrogenase; N: normal; PS: performance status; IPI: international prognostic index.
Except for age and bulky disease, the two trials were comparable (no statistical significance). Bulky disease was observed in 9 patients, all included in the trial 02 ( ).
Six patients of the GOELAMS 02 trial had epidural involvement, revealed by paraplegia.