Immunohistochemical and molecular genetic analyses of multiple sporadic gastrointestinal stromal tumors

Table 1 Details of the twelve gastrointestinal stromal tumors

Tumor number	Localization, distance from treitz ligament (cm)a	Tumor size (mm)	Resection	Mitotic counts	Risk stratification
#1	20	5 × 5	Wedge resection	< 5/50 HPF	Very low risk
#2	50	3 × 3	Wedge resection	< 5/50 HPF	Very low risk
#3	100	10 × 10	Wedge resection	< 5/50 HPF	Very low risk
#4	150	2 × 2	Wedge resection	< 5/50 HPF	Very low risk
#5	170	50 × 40	Partial resection	< 5/50 HPF	Intermediate risk
#6	180	10 × 10	Partial resection	< 5/50 HPF	Very low risk
#7	200	4 × 4	Partial resection	< 5/50 HPF	Very low risk
#8	220	5 × 5	Partial resection	< 5/50 HPF	Very low risk
#9	240	30 × 20	Partial resection	< 5/50 HPF	Low risk
#10	290	70 × 60	Partial resection	< 5/50 HPF	Intermediate risk
#11	295	5 × 5	Partial resection	< 5/50 HPF	Very low risk
#12	300	6 × 6	Partial resection	< 5/50 HPF	Very low risk

^aThe full length of the small intestine was 410 cm, HPF: High-power field. The tumor number #5 to #12 are resected together.