Abstract
Cryosurgery of hepatic metastases from colorectal carcinoma is a form of local therapy for unresectable disease. After curative resection, failures occur in the liver, and at extrahepatic sites. This pilot study evaluated the toxicity and tolerance to cryotherapy and intraoperative chemotherapy for unresectable hepatic metastases from colorectal cancer. If after exploratory celiotomy for potential curative resection of hepatic metastases the patient was deemed unresectable because of location and/or number of lesions, cryosurgery and intraoperative chemotherapy with systemic 5-fluorouracil 600 mg/m2and leucovorin 500 mg/m2was performed. Four patients were treated with cryochemotherapy. All patients developed toxicity. Two patients developed grade III leukopenia on Postoperative Days 2 and 12, and grades II and III diarrhea on Postoperative Days 5 and 7, respectively. Grade III hyperbilirubinemia and thrombocytopenia occurred in one patient on Postoperative Days 3 and 7. Acute respiratory distress syndrome, postoperative ileus, and grade II mucositis occurred in one patient each. All patients had delays and dose reductions on their subsequent chemotherapy treatments secondary to toxicity. Two patients had disease progression, one had stable disease, and one is “disease free.” Combining the tumoricidal effects of chemotherapy and cryosurgery is in theory a good concept. However, the toxicity of 5-FU and leucovorin is enhanced by this approach.
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