Table 2. CA 19.9 blood levels before and after the RFA procedure in group B, consisting of patients with stable CA 19.9 values or with oscillations of these levels between ±10 Units.

Patients with stable CA 19.9 values (variations of ±10 Units)	CA 19.9 values pre	CA 19.9 values post
1	740	747
2	28	26
3	0.6	0.6
4	21	22
5	19	20
6	0.8	0.6
7	6	6
8	238	237
9	161	166
10	225	223

RFA, radiofrequency ablation.