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  • Title: Surgical management for metastatic liver tumors.
    Author: Hirai I, Kimura W, Fuse A, Isobe H, Hachiya O, Moriya T, Suto K, Mizutani M.
    Journal: Hepatogastroenterology; 2006; 53(71):757-63. PubMed ID: 17086883.
    Abstract:
    BACKGROUND/AIMS: This study investigated the results of hepatectomy for multiple liver metastases and repeated hepatectomy for recurrent hepatic metastases. A proposed treatment strategy for liver metastases is discussed. METHODOLOGY: Fifty-seven consecutive cases of liver metastases were studied. The metastases originated from colon cancer (24 cases), rectal cancer (11 cases), gastric cancer (14 cases), or gastrointestinal stromal tumors (two cases). The other cases included one each of gastric carcinoid, carcinoma of the papilla of Vater, cystic duct cancer, esophageal cancer, choriocarcinoma and breast cancer. RESULTS: The overall 5-year survival rate for the 57 cases was 45.4%; there was no significant difference between patients with colon cancer (56.3%), rectal cancer (45.5%), or gastric cancer (41.6%). The cumulative 5-year survival rates for synchronous and metachronous metastases were 38.3% and 50.8%, respectively (difference not statistically significant; NS). The survival rates for single and multiple metastases were 56.0% and 31.3% (NS), and those for monolobar and bilobar metastases were 48.5% and 40.9% (NS), respectively. Concerning the operative procedure, the survival rates for partial resection and hemi-hepatectomy were 49.5% and 26.9%, respectively (NS). The survival rates for surgical margins <4mm and >5mm were 45.9% and 45.4%, respectively (NS), and those for single and repeat hepatectomy were 40.5% and 58.2% (NS). Preoperative portal embolization was performed in seven cases because of multiple metastases or a tumor located in a deeper site in the liver. There was no hospital death among the 57 cases. CONCLUSIONS: These results show that hepatectomy may offer longer survival, even in patients with multiple or bilobar metastases. Neither the operative procedure nor the size of the surgical margin had any influence on survival after hepatectomy. The prognosis was improved not only for metastases from colorectal cancer, but also for gastric cancer. An increased survival benefit was obtained by repeat hepatectomy for recurrent hepatic metastases. Preoperative portal embolization extended the indication for hepatectomy and provided postoperative safety.
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