Table 1. Clinical characteristics of the cases.

Characteristics		n=39	%
Sex
	Male	22	56.4
	Female	17	43.6
Age at initial diagnosis
	<50 years	11	28.2
	≥50 years	28	71.8
Mean age at initial diagnosis (years ± SD)		58 ± 12
Median age at initial diagnosis (years ± SD)		61 ± 12
Tumor grade
	G1 (well-differentiated)	11	28.2
	G2 (moderately-differentiated)	14	35.9
	G3 (poorly-differentiated)	3	7.7
	No information available	11	28.2
Tumor stage
	T1/2 (early)	8	20.5
	III/IV (advanced)	19	48.7
	No information available	12	30.8
Tumor location
	Colon	17	43.6
	Rectum	17	43.6
	Rectosigmoid	3	7.7
	Cecum	1	2.6
	Sigmoid	1	2.6