J.Jpn. Surg. Soc.. 107(3): 128-132, 2006

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Feature topic

NEOADJUVANT CHEMOTHERAPY AS A TREATMENT STRATEGY FOR MULTIPLE BILOBAR LIVER METASTASES FROM COLORECTAL CARCINOMA

Hepatic resection remains the only potentially curative therapy for patients with colorectal liver metastases. Because most have multiple bilobar liver metastases, surgical resection is possible in only 25-58%　of patients with colorectal liver metastases. Currently, attention is focused on the potential for neoadjuvant chemotherapy to render formerly unresectable patients resectable. The availability of more efficacious chemotherapy agents and an inventive approach to delivery schedules have resulted in an increase in the number of candidates for hepatic resection after neoadjuvant chemotherapy. Although tumor response varies with regimen and/or route of chemotherapy for colorectal liver metastases, with 16-63%　tumor response rates, hepatic resection for responders after neoadjuvant chemotherapy gives survival benefits, with 20-48%　5-year survival rates after surgery. Provided that neoadjuvant chemotherapy controls multiple bilobar liver metastases well, aggressive hepatic resection should be considered for patients with those lesions. As a treatment strategy for multiple bilobar liver metastases, neoadjuvant chemotherapy is a useful to increase resection rates and may contribute to the improvement of prognosis in patients with such lesions.

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