CT-monitored minimal ablative margin control in single-session microwave ablation of liver tumors: an effective strategy for local tumor control.

ABSTRACT:

Objectives

To investigate the usefulness of minimal ablative margin (MAM) control by intra-procedural contrast-enhanced CT (CECT) in microwave ablation (MWA) of liver tumors.

Methods

A total of 334 consecutive liver tumors (240 hepatocellular carcinomas [HCCs] and 94 colorectal liver metastases [CRLMs]) in 172 patients treated with percutaneous MWA were retrospectively included. MAM of each tumor was assessed after expected ablation completion using intra-procedural CECT, allowing within-session additional ablation to any potentially insufficient margin. On immediate post-MWA MRI, complete ablation coverage of tumor and final MAM status were determined. The cumulative local tumor progression (LTP) rate was estimated by using the Kaplan-Meier method. To identify predictors of

SUBMITTER: Joo I 

PROVIDER: S-EPMC9381632 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature