Palliative primary tumor resection provides survival benefits for the patients with metastatic colorectal cancer and low circulating levels of dehydrogenase and carcinoembryonic antigen

Table 4 Characteristics of the 257 colorectal cancer patients with unresectable metastasis who had normal LDH levels

Characteristic	Variable	Total	PPTR group	Non-PPTR group	P
Age (years)	≤60	141	103	38	0.500
Age (years)	>60	116	89	27	0.500
Sex	Men	180	134	46	0.882
Sex	Women	77	58	19	0.882
Location	Right	98	75	23	0.799
	Left	80	60	20
	Rectal	79	57	22
First-line chemotherapy	Oxaliplatin-based	228	171	57	0.763
First-line chemotherapy	Irinotecan-based	29	21	8	0.763
Metastasis organs	1	201	152	49	0.733
	2	51	36	15
	≥3	5	4	1
CEA (ng/mL)	≤5	62	45	17	0.658
CEA (ng/mL)	>5	195	147	48	0.658
ALP (U/L)	≤110	223	166	57	0.800
ALP (U/L)	>110	34	26	8	0.800

All values are presented as number of patients
PPTR palliative primary tumor resection, CEA carcinoembryonic antigen, ALP alkaline phosphatase, LDH lactate dehydrogenase

ISSN: 2523-3548