In Colorectal Liver Metastases, the Presence of Extrahepatic Disease Correlates with the Pathology of the Primary Tumour

Table 1

Results of univariate analysis.

	No extrahepatic disease on PET	PET positive for extrahepatic disease	P
Age
Less than 60 years	17	23	.6
Over 60 years	24	42
Interval for recurrence
Less than 12 months	31	37	.08
More than 12 months	10	28
Degree of differentiation; of primary tumour
Well moderate	59	18	<.0001
Poor	6	23
Lymphovascular invasion
Present	61	9	<.0001
Absent	4	32
T stage
T2	12	2	.02
T3-4	53	39
N stage
N0	16	7	.4
N1	49	34
CEA level
Less than 20 mcg/L	41	12	.001
More than 20 mcg/L	24	27
Size of the liver metastases
Less than 5 cm	47	21	.02
5 cm or more	18	20
Bilobar Disease			.001
Yes	7	21
No	58	20