MSI before HP eradication

MSI after HP eradication

p

Low grade MALT

6/30            (20%)

0/30                 (0%)

<0.001

MALTDLBCL

16/36a#          (44%)

2/36               (6%)

<0.001

De novo DLBCL

15/41b#             (36%)

5/41                (12%)

<0.01

a- Low a grade MALT vs. MALT BLBCL b- Low-grade MALT vs. De Novo BLBCL
c- MALT BLBCL vs. De Novo BLBCL
* P<0.001, $ P<0.01, # P<0.05
Table 2: Incidence of MSI in gastric lymphoma patients before and after helicobacter eradication.