Table I.

Clinical characteristics of colorectal cancer patients.

Variables	Patients
Number	22
Men/women	11/11
Mean age (range)	57 (36–81)
Tumor localization
Colon	9 (40%)
Rectum	2 (9%)
Sigmoid	5 (22.7%)
Rectosigmoid	6 (27.3%)
Adenocarcinoma	22
Differentiation grade
Moderately differentiated	19 (86.4%)
Poorly differentiated	3 (13.6%)
Clinical staging
Stage I	1 (4.5%)
Stage II	12 (54.5%)
Stage III	8 (36.4%)
Stage IV	1 (4.5%)
Tumor staging
T2	3 (13.6%)
T3	17 (77.3%)
T4	2 (9%)
Lymph node status
N0	14 (63.6%)
N1	6 (27.3%)
N2	2 (9%)
Metastasis
Yes	8 (36.3%)
No	14 (63.6%)