Table 1. Clinicopathological features of a cohort of rectal cancer patients.

Clinicopathological variables	N (%)
T stage
T1	2 (2)
T2	16 (18)
T2	68 (76)
T3	4 (4)
T4	68 (76)
N stage
N0	57 (63)
N1	21 (23)
N2	12 (13)
Operation
Anterior resection	75 (83)
Abdominoperineal excision	15 (17
Histogical grade
Well differentiated	4 (4)
Moderately differentiated	73 (81)
Poorly differentiated	13 (14)
Dukes’ stage
Dukes’ A	17 (19)
Dukes’ B	40 (44)
Dukes’ C1	28 (31)
Dukes’ C2	5 (6)
TNM stage
Stage I	17 (19)
Stage II	40 (44)
Stage III	33 (37)
Vascular invasion
Not seen	63 (70)
Intramural	11 (12)
Extramural	16 (18)

TNM=tumour node metastasis.