Table 5.

Recurrent patterns and prognoses of patients stratified by preoperative serum CA19-9 level and tumor diameter

Group	Number	CA19-9 ≥ 529	Tumor size ≥25 mm	Recurrence (n = 60)	Distant metastasis (n = 32)	Local recurrence (n = 28)	Median OS (months)	P value*
1	5	+	−	5 (100%)	4 (80.0%)	1 (20%)	12
2	32	−	−	16 (50%)	7 (21.9%)	9 (28.1%)	Over 102.9	0.0002
3	20	+	+	16 (80%)	11 (55%)	5 (25%)	27	0.0485
4	33	−	+	23 (69.7%)	10 (30.3%)	13 (39.4%)	45.3	0.028

*Significant values of P < 0.01 was considered after Bonferroni correction