Imaging findings of liver resection using a bipolar radiofrequency electrosurgical device-Initial observations.

Maurizio Soresi, Massimo Midiri, Giuseppe Cabibbo, Giuseppe Brancatelli, Massimo Galia, Tommaso Vincenzo Bartolotta, Roberto Lagalla, Adele Taibbi, Alessandro Furlan, Giuseppe Brancatelli, Daniele Marin, Luigi Sandonato, Valentina Bova

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Abstract

Objective: To assess contrast-enhancedUS(CEUS),computed tomography(CT)and magnetic resonance (MR) imaging findings and serial changes of the treated area at follow-up in patients who under went liver resection using a bipolar radiofrequency electrosurgical device.Methods: Imaging findings of 27 patients with resected hepatocellular carcinomas(HCCs)(n = 24)andmetastases (n = 3)(mean size:2.6cm),were retrospectively evaluated. Two readers assessed:the(a)presence, (b)thickness,(c)shapeand(d)echogenicity(CEUS)/attenuation(CT)/signalintensity(MRimaging) at coagulated site and the(e)presence of residual tumor of the bipolar radiofrequency electrosurgicaldevice resection margin.Results: Follow-up was performed with either CT(n = 20)or MR imaging(n = 7)and repeated in 16 patientswith CT(n = 7),MR imaging(n = 4),or both techniques(n = 5).Four patients also had a single CEUS examination. At first imaging follow-up a peripheral halo was depicted at resection site(100%).A fluid collectionwithin the surgical area was found in 67% of patients. During the following imaging examinations a progressive involution of both findings was observed,respectively,in 81% and 62%of patients. Viable tissuewas detected in three patients(11%).Conclusions: After liver resection with bipolar radiofrequency electrosurgical device successfully ablatedtumor is demonstrated at imaging by an unenhancing partial linear peripheral halo,in most cases,surrounding a fluid collection reducing in size during follow-up.
Original languageEnglish
Pages (from-to)663-670
Number of pages8
JournalEuropean Journal of Radiology
Volume81
Publication statusPublished - 2012

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All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging

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