Table 1.

Clinicopathologic data of primary tumor therapy

Parameter	Patients
	No.	%
Sex
Female	18	28
Male	46	72
Primary cancer
Colon	39	61
Rectuma	25	39
Primary tumor stage at surgery
UICC I	4	6
UICC II	13	20
UICC III	8	13
UICC IV	39	61
Adjuvant 5FU-based chemotherapy
Yes	15	23
No	49	77
Detection of hepatic metastases
Synchronousb	42	66
Metachronous	22	34

UICC Union Internationale Contre le Cancer

^aUp to 16 cm above anocutaneous verge as measured by rigid rectoscopy according to UICC/TNM 2003

^b≤3 months between primary tumor resection and diagnosis of liver metastases