Table 7. CA 19.9 blood levels before and after the RFA procedure in subgroups of group A, consisting of patients with CA 19.9 values reduced less than 30%.

Patients of group A (values reduced more than 10 Units) with CA 19.9 values reduced less than 30%	CA 19.9 values pre	CA 19.9 values post
1	2,554	1,810
2	253	207
3	1,212	979
4	2,555	2,000
5	599	446
6	266	198
7	72	59
8	112	102

RFA, radiofrequency ablation.