JMA Journal

Figure 1. Distribution of serum CA-19-9 levels before the patients’ surgeries. Twelve (6.1%) of the 196 patients with PTC showed high serum CA19-9 levels before surgery. White circles, high serum CA19-9 levels ; Black circles, normal serum CA19-9 levels.

Figure 2. The patients’ serum CA19-9 levels before and after surgery.

Figure 3. Immunohistochemistry for CA19-9 in the PTC tissues. Specimens with (a) weak, (b) moderate, (c) strong, and (d) almost no expression.