Differences in K- ras and mitochondrial DNA mutations and microsatellite instability between colorectal cancers of Vietnamese and Japanese patients

Table 3 Clinicopathologic features of informative cases of Vietnamese and Japanese CRCs undergoing mitochondrial DNA analysis

	Vietnamese CRC (n = 44)	Japanese CRC (n = 133)	p-value
Age, mean (range)	54.0 (32–82)	63.7 (37–88)	<0.001
Sex (male, female)	29/15	82/51	0.61
Tumour location
Right/left side*	10/34	32/101	0.98
Histology
Well/moderately/poorly differentiated	1/37/6	41/82/10	0.22

*Right-side colon includes the cecum, ascending and transverse colon. Left-side colon includes the descending and sigmoid colon and rectum. CRC, colorectal cancer.