Since 1976, postoperative long term immunochemotherapy (PLIC) with PSK and 5-FU Dry Syrup (5-FUDS) was performed after tumor resection in gastric and colorectal cancer patients. Successful continuation over one year of the therapy was done in 40 cases at stages III and IV (+V) in the period between January 1976 and April 1979. These cases were analyzed and following results were obtained. Two-and 3-year survival rates were 80% and 65% respectively when the total cases of one year survival was taken as 100%. However, there were recurrent or tumor-bearing patients being treated by PLIC and, if they had died within the respective years, 2-and 3-year survival rates would have been reduced to 67.5% and 32.5%, respectively. These survival rates were roughly similar as those of historical control group, in which no immuno-chemotherapy was done. Characteristic features of non-specific immunological parameters seen in the recurrent or tumor-bearing cases of relatively good clinical course were improvement in T cell percentage, reduction or stop of in IgG-FcR (+) T cell percentage and maintenance of a good nutritional condition.
Aged Antibiotics, Antineoplastic