CRYOSURGERY CAUSES A PROFOUND REDUCTION IN TUMOR-MARKERS IN HEPATOMA AND NONCOLORECTAL HEPATIC METASTASES

Cryosurgical ablation of hepatic metastases from colon carcinoma has b ecame a useful adjunct in the management of patients whose tumors are not amenable to surgical resection. We evaluated cryoablation of hepat oma and noncolorectal hepatic metastases by examining its effect on se rum levels of tumor markers in 20 patients with primary liver cancer ( N = 5) or liver metastases (N = 15) from breast cancer, neuroendocrine tumors, ovarian cancer, and thyroid cancer. Fall patients had failed conventional therapy and had no evidence of extrahepatic spread. After cryosurgery, 17 patients had a significant decrease in tumor marker l evels (median 77%) and a significant improvement in symptoms. One pati ent died of nontumor causes, and five patients died of recurrent disea se. Median interval to death or last follow-up was 28.3 months overall (range, 2-45 months), 17.9 months for nonsurvivors (range, 2-44 month s), and 35.2 months for survivors (range, 26-45 months). Median surviv al was 32 months following curative surgery (range, 16-45 months) and 25 months following palliative surgery (range, 2-42 months), Cryosurgi cal ablation of noncolorectal hepatic metastases and primary hepatomas produces a profound reduction in serum levels of tumor maskers. it is safe, provides excellent palliation of symptoms, and in selected pati ents can be performed with curative intent.