[The effect of gastrectomy on serum 5-FU concentrations of patients administered UFT per os]

Ten post-total gastrectomy patients and five postsubtotal patients were administered with UFT 3 capsules per os. Then the concentrations of the serums FT-207, 5-FU and Uracil, and that of 5-FU in the lymph-nodes were measured chronologically. The concentration of serum FT-207 reached to its peak one hour after administration of the regimen for both the total and subtotal gastrectomy patients and gradually lowered. The 5-FU serum concentration, on the other hand, showed a rapid drop after reaching a peak one hour after administration of the UFT for both the post-total and subtotal gastrectomy patients. The concentration of 5-FU in the lymph nodes remained five times as high as the serum concentration after four hours for both the post-total and subtotal gastrectomy patients.