Two Patients with Extremely Elevated Tumor Markers: Where Is the Malignancy?

Figure 2

Serum Cancer Antigen 19-9 (CA 19-9) and total bilirubin concentrations in a 60-year-old female patient with obstructive jaundice due to a large biliary stone. Both markers rapidly decreased after endoscopic placement of a biliary endosprothesis. Surgery was performed in March 2009.