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DOI:10.2214/AJR.07.2798
AJR 2008; 190:1544-1551
© American Roentgen Ray Society

Clinical Observations

Local Tumor Progression After Radiofrequency Ablation of Liver Tumors: Analysis of Morphologic Pattern and Site of Recurrence

Shiu Kong Kei1,2, Hyunchul Rhim1, Dongil Choi1, Won Jae Lee1, Hyo K. Lim1 and Young-sun Kim1

1 Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50, Ilwon-Dong, Kangnam-Ku, Seoul 135-710, South Korea.
2 Present address: Department of Diagnostic Radiology, Tuen Mun Hospital, Tuen Mun, New Territories, Hong Kong.

OBJECTIVE. The purpose of our study was to assess the morphologic pattern and exact site of local tumor progression with relation to various risk factors after radiofrequency ablation of liver tumors.

CONCLUSION. Local tumor progression after radiofrequency ablation shows mostly the peripheral nodular type. The site of local tumor progression shows a higher concordance rate with insufficient ablative margin than contiguous vessel and subcapsular location.

Keywords: hepatic tumor • hepatocellular carcinoma • local tumor progression • metastases • radiofrequency ablation


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