Clinicopathological analysis of recurrence patterns and prognostic factors for survival after hepatectomy for colorectal liver metastasis

Table 2 Risk factors for intrahepatic recurrence after initial hepatectomy

Factor	Number of patients	Univariate *P-value*	Multivariate *P-value*
Location of CRC		0.0733
Colon	27
Rectum	5
Depth of CRC		0.2112
< ss (a1)	19
> se (a2)	12
Tumor differentiation of CRC		0.4618
well	13
moderate	16
poor	1
Lymphatic invasion of CRC		1.0000
Present	25
Absent	5
Venous invasion of CRC		0.7765
Present	23
Absent	7
Lymph node metastasis of CRC		0.6320
Present	21
Absent	10
Time of liver metastasis		0.8151
Synchronous	12
Metachronous	20
Timing of hepatectomy		1.0000
Synchronous	6
Metachronous	26
Number of CRCLM		0.3516
Single	16
Multiple	16
Size of CRCLM		0.1218
< 5 cm	23
≥ 5 cm	8
Portal vein invasion of CRCLM		0.7072
Present	4
Absent	27
Surgical margin of CRCLM		*0.0228*	*0.0133*
< 5 mm	15
≥ 5 mm	13
Chemotherapy before hepatectomy		0.4837
Present	15
Absent	17
Chemotherapy after hepatectomy		0.1976
Present	19
Absent	12

ISSN: 1471-2482