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Laparoscopic radiofrequency ablation of subcapsular hepatocellular carcinomas: risk factors related to a technical failure

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Abstract

Background

This study aimed to evaluate the risk factors related to a technical failure after laparoscopic radiofrequency ablation (RFA) for subcapsular hepatocellular carcinomas (HCCs).

Materials and methods

A total of 110 patients with 114 HCCs who underwent laparoscopic RFA for HCCs (new HCC [n = 85] and local tumor progression [LTP] [n = 29]) between January 2013 and December 2018 were included. We evaluated the incidence of technical failure on immediate post-RFA CT images. Risk factors for a technical failure after laparoscopic RFA were assessed using univariable logistic regression analyses. The cumulative LTP rate was estimated using the Kaplan–Meier method.

Results

Technical failure was noted in 3.5% (4/114) of the tumors. All four tumors that showed a technical failure were cases of LTP from previous treatment and were invisible on laparoscopy. On univariate analysis, LTP lesion, invisibility of the index tumor on laparoscopy, and peri-hepatic vein location of the tumor were identified as risk factors for a technical failure. The cumulative LTP rates at 1, 3, and 5 years were estimated to be 2.8%, 4.8%, and 4.8%, respectively.

Conclusions

LTP lesion, invisibility of the index tumor on laparoscopy, and peri-hepatic vein location of the tumor were identified as the risk factors for a technical failure after laparoscopic RFA.

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Correspondence to Min Woo Lee.

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Disclosures

Drs. Seong Eun Ko, Min Woo Lee, Ji Hye Min, Soo Hyun Ahn, Hyunchul Rhim, Tae Wook Kang, Kyoung Doo Song, Jong Man Kim, Gyu-Seong Choi, Dong Ik Cha, and Hyo Keun Lim have no conflict of interest or financial ties to disclose.

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Ko, S.E., Lee, M.W., Min, J.H. et al. Laparoscopic radiofrequency ablation of subcapsular hepatocellular carcinomas: risk factors related to a technical failure. Surg Endosc 36, 504–514 (2022). https://doi.org/10.1007/s00464-021-08310-7

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  • DOI: https://doi.org/10.1007/s00464-021-08310-7

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