Mitochondrial microsatellite instability in gastric cancer and its precancerous lesions

Table 3 Characteristics of 68 gastric cancer patients

Characteristic	n	mtMSI-positive	tMSI-negative
Age
<40 years	15	5	10
>40 years	53	21	32
Sex
Male	42	15	27
Female	26	11	15
Size
<5 cm	38	14	24
>5 cm	30	12	18
Histological type
Intestinal	41	22b	19
Diffuse	27	4	23
Tumor location
Distal	45	23c	22
Proximal	23	3	20
Invasion
Within the wall	33	12	21
Invading serosa	35	14	21
Lymph node spread
Absent	30	11	19
Present	38	15	23

^bP=0.001 vs the groups of diffuse type and

^cP=0.002 vs the groups of proximal loation.