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Extrahepatic soft tissue mimicking applicator-tract implantation after percutaneous radiofrequency ablation of hepatic malignancy

Title
Extrahepatic soft tissue mimicking applicator-tract implantation after percutaneous radiofrequency ablation of hepatic malignancy
Authors
Lee J.K.Baek S.Y.Kim Y.
Ewha Authors
백승연김유경이정경
SCOPUS Author ID
백승연scopus; 김유경scopus; 이정경scopus
Issue Date
2012
Journal Title
American Journal of Roentgenology
ISSN
0361-803XJCR Link
Citation
vol. 199, no. 2, pp. 453 - 457
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
OBJECTIVE. The purpose of our study was to identify extrahepatic soft tissue mimicking applicator-tract implantation after percutaneous radiofrequency ablation of hepatic malignancy on triple-phase dynamic CT. MATERIALS AND METHODS. A database was reviewed for 131 patients who underwent percutaneous radiofrequency ablation for treatment of a hepatic tumor over a 3-year period. Patients who developed extrahepatic soft tissue adjacent to the previous ablation zone mimicking applicator-tract implantation were identified. The clinical features of patients, characteristics of extrahepatic soft tissue on CT, soft-tissue changes on follow-up CT, and histopathologic results were evaluated. RESULTS. Extrahepatic soft tissue developed in five patients (3.8%) at 2-8 months after percutaneous radiofrequency ablation. Extrahepatic soft tissue showed progressive enhancement during the delayed phase of dynamic CT. Four lesions were completely resolved without any treatment. However, one lesion was enlarged and xanthogranulomatous inflammation was diagnosed by percutaneous biopsy. Univariate analysis showed that an index tumor with a subcapsular location and a prior biopsy had high odds ratios. CONCLUSION. The possibility of a benign inflammatory lesion should be considered when extrahepatic soft tissue showing radiologic findings similar to applicator-tract implantation develops after radiofrequency ablation of a hepatic tumor. © American Roentgen Ray Society.
DOI
10.2214/AJR.11.8165
Appears in Collections:
의학전문대학원 > 의학과 > Journal papers
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