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Microwave ablation for hepatic malignancies: a multiinstitutional analysis.

Abstract：

OBJECTIVE:This study hypothesized that tumor size, number of tumors, surgical approach, and tumor histology significantly affected microwave ablation (MWA) success and recurrence-free survival. BACKGROUND:Although many hepatobiliary centers have adopted MWA, the factors that influence local control are not well described. METHODS:Consecutive patients with hepatic malignancy treated by MWA were included from 4 high-volume institutions (2003-2011) and grouped by histology: hepatocellular carcinoma (HCC), colorectal liver metastases, neuroendocrine liver metastases, and other cancers. Independent significance of outcome variables was established with logistic regression and Cox proportional hazards models. RESULTS:Four hundred fifty patients were treated with 473 procedures (139 HCC, 198 colorectal liver metastases, 61 neuroendocrine liver metastases, and 75 other) for a total of 875 tumors. Median follow-up was 18 months. Concurrent hepatectomy was performed in 178 patients (38%), and when performed was associated with greater morbidity. Complete ablation was confirmed for 839 of 865 tumors (97.0%) on follow-up cross-sectional imaging (10 were unevaluable). A surgical approach (open, laparoscopic, or percutaneous) had no significant impact on complication rates, recurrence, or survival. The local recurrence rate was 6.0% overall and was highest for HCC (10.1%, P = 0.045) and percutaneously treated lesions (14.1%, P = 0.014). In adjusted models, tumor size 3 cm or more predicted poorer recurrence-free survival (hazard ratio: 1.60, 95% CI: 1.02-2.50, P = 0.039). CONCLUSIONS:In this large data set, patients with 3 cm or more tumors showed a propensity for early recurrence, regardless of histology. Higher rates of local recurrence were noted in HCC patients, which may reflect underlying liver disease. There were no significant differences in morbidity or survival based on the surgical approach; however, local recurrence rates were highest for percutaneously ablated tumors.

journal_name

Ann Surg

journal_title

Annals of surgery

authors

Groeschl RT,Pilgrim CH,Hanna EM,Simo KA,Swan RZ,Sindram D,Martinie JB,Iannitti DA,Bloomston M,Schmidt C,Khabiri H,Shirley LA,Martin RC,Tsai S,Turaga KK,Christians KK,Rilling WS,Gamblin TC

doi

10.1097/SLA.0000000000000234

subject

Has Abstract

pub_date

2014-06-01 00:00:00

pages

1195-200

issue

eissn

0003-4932

issn

1528-1140

journal_volume

259

pub_type

杂志文章,多中心研究

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Microwave ablation for hepatic malignancies: a multiinstitutional analysis.