Criteria Sailer et al A.Pich et al Bartl et al Niti Singhal et al ourstudy
(no.of cases) (153) (150) (674) (11) (16)
Grading          
WD 54 64 51 58 26
ID 42 21 23 56 0
PD 13 9 9 11 3
Volume of infiltration          
<20% 72 60 53 66 22
20-50% 62 21 25 52 22
>50% 44 9 15 1 27
Pattern of neoplastic cells          
Interstitial 65 57 46 61 22
Nodular 40 27 20 45 33
Diffuse 25 12 16 11 26
Fibrosis          
Absent 45 31 52 63 23
Moderate 25   23 31 37
Marked 22   13 10  
Hemopoiesis          
Normal 65     64 21
Reduced 55     42 26.5
WD-well differentiated ID-intermediatedifferentiation PD-Poorly differentiation
Table 1: We compared the median survival (in months) of histological parameters of bone marrow biopsies of myeloma patients in our study with other studies.