CT diagnosis of recurrence after pancreatic cancer: Is there a pattern?

Table 3 Mean tumor marker values at the time of recurrence stratified by type of recurrence

Type of recurrence	Tumor marker
	n	CA 19-9 (U/mL)	n	CEA (μg/L)
Local	32	781.67 ± 2090.28	26	9.95 ± 15.57
Lymph node	5	244.02 ± 413.03	4	3.13 ± 2.35
Liver metastasis	5	6674.80 ± 14338.02	5	18.1 ± 18.26
Local & lymph node	7	399 ± 738.15	6	4.28 ± 4.03
Local & liver metastasis	5	1157.0 ± 1802.0	5	21.88 ± 26.76
Local & peritoneal carcinosis	3	351.0 ± 257.66	2	46.0 ± 39.6

No statistically significant differences in tumor markers between types of recurrence (one-way analysis of variance) except comparison of mean values of carbohydrate antigen 19-9 (CA19-9) for local recurrence and liver metastasis (P = 0.025, Student t-test). CEA: Carcinoembryonic antigen.