European Journal of Radiology
Volume 44, Issue 1 , Pages 40-43, October 2002

Intrahepatic pseudoaneurysm: a complication following radio-frequency ablation therapy for hepatocellular carcinoma

Division of Hepatobiliary Pancreatic Medical Oncology, National Cancer Center Hospital East, 6-5-1 Kashiwanoha, Kashiwa, Chiba 277-8577, Japan

Received 20 August 2001; received in revised form 2 October 2001; accepted 3 October 2001.

Abstract 

A 70-year-old male was admitted to hospital for a liver tumor. We diagnosed that hepatocellular carcinoma (HCC), 1.5 cm in diameter, by several examinations. We performed ultrasonically guided radio-frequency ablation (RFA). Ultrasonography (US) 9 days post-therapy revealed a cystic lesion 1.5 cm in diameter. Color Doppler US revealed color imaging throughout the lesion and dynamic computed tomography (CT) demonstrated an area of hyperattenuation. Intrahepatic pseudoaneurysm was diagnosed. On 14 days post-therapy, no color signals on color Doppler US or enhanced areas on CT were seen. We submit that pseudoaneurysm should be recognized as a complication of radio-frequency ablation.

Keywords: Aneurysm, Liver, Neoplasms, Therapy

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PII: S0720-048X(01)00436-3

European Journal of Radiology
Volume 44, Issue 1 , Pages 40-43, October 2002

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