Microsatellite instable double primary cancers of the colorectum and stomach exhibit less favorable outcome

Table 1 Clinicopathologic features of double primary gastric and colorectal cancers

Case	Sex	Age (yr)	Onset	Gastric cancer				Site	Colorectal cancer
				Differentiation	T	N	Stage		Differentiation	T	N	Stage
1	Male	49	Synchronous	Diffuse	1	0	1	TC	Moderate	4	1	3/C
2	Male	35	Synchronous	Intestinal	2	0	1	AC	Mucinous	3	2	3/C
3	Male	50	Metachronous	Intestinal	2	0	1	DC	Moderate	3	1	3/C
4	Male	56	Synchronous	Intestinal	1	0	1	C	Moderate	3	1	3/C
5	Male	68	Synchronous	Intestinal	1	0	1	SC	Mucinous	3	0	2/B
6	Male	57	Synchronous	Diffuse	1	0	1	R	Moderate	3	2	3/C
7	Male	54	Synchronous	Intestinal	2	0	1	SC	Moderate	2	0	1/A
8	Male	61	Synchronous	Intestinal	1	0	1	AC	Moderate	2	0	1/A
9	Female	76	Metachronous	Intestinal	1	0	1	TC	Moderate	3	0	2/B
10	Male	65	Synchronous	Intestinal	1	0	1	AC	Moderate	3	0	2/B
11	Female	65	Synchronous	Diffuse	1	0	1	AC	Mucinous	3	1	3/C
12	Male	48	Metachronous	Diffuse	?	?	?	AC	Moderate	3	2	3/C
13	Male	71	Synchronous	Intestinal	1	0	1	AC	Well	3	1	3/C
14	Male	65	Synchronous	Diffuse	1	0	1	SC	Moderate	3	0	2/B
15	Male	59	Synchronous	Intestinal	1	0	1	AC	Mucinous	3	0	2/B
16	Male	61	Metachronous	Diffuse	2	0	1	SC	Moderate	3	1	3/C

C, cecum; AC, ascending colon; TC, transverse colon; DC, descending colon; SC, sigmoid colon; R, rectum.