Table 4. Patterns of recurrence.

Dukes' stage of primary	Number of patients	No recurrence	Recurrence <6/12	Recurrence >6/12
A	1	1	0	0
B	41	21	6	14
C	34	17	9	8

Number of metastases	No. of patients	No recurrence	Recurrence <6/12	Recurrence >6/12
H1 (<2)	30	15	6	9
H2 (2–5)	44	23	9	12
H3 (>5)	2	1	0	1

Liver resection	No. of patients	No recurrence	Recurrence <6/12	Recurrence >6/12
R hemihepatectomy	15	8	4	3
Ext. R hemihepatectomy	12	6	4	2
L hemihepatectomy	4	2	0	2
Ext. L hemihepatectomy	2	1	0	1
Segmental or wedge resection	38	20	7	11
Ext. hemihepatectomy+wedge	5	2	0	3

Recurrence <6/12, recurrence diagnosed within 6 months of liver resection; recurrence >6/12, recurrence diagnosed beyond 6 months of liver resection; H1, solitary liver metastasis; H2, 2–5 liver metastases; H3, >5 liver metastases.