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CT-guided Transthoracic Percutaneous Ethanol Injection for Hepatocellular Carcinoma Not Detectable with US¹

¹ From the Departments of Diagnostic Imaging and Nuclear Medicine (T.S., K.I., Y.M., F.A., T.K., J.K.) and Gastroenterological Surgery (Y.I., Y.Y., I.I.), Kyoto University Graduate School of Medicine, Shogoin, Sakyoku, Kyoto 606-8507, Japan. Received April 30, 2001; revision requested May 21; revision received August 7; accepted September 28. Address correspondence to T.S. (e-mail: ksj@kuhp.kyoto-u.ac.jp).

PURPOSE: To evaluate the safety and effectiveness of computed tomography (CT)-guided percutaneous ethanol injection (PEI) for the treatment of hepatocellular carcinoma (HCC) not detectable with ultrasonography (US).

MATERIALS AND METHODS: Between April 1994 and January 2001, 51 patients with 57 HCC nodules not detectable with US underwent CT-guided transthoracic PEI. Complications associated with the transthoracic approach, effectiveness of transthoracic PEI, and prognosis of the patients were evaluated.

RESULTS: Seventy-one PEI sessions were performed for 57 nodules. Complications included pneumothorax in 21 sessions (30%) for 19 nodules (33%), moderate pleural effusion in four sessions (6%) for four nodules (7%), and hemoptysis in three sessions (4%) for two nodules (4%). A chest tube was required for pneumothorax in five sessions (7%) for five nodules (9%), and pleural effusion drainage was performed in two sessions (3%) for two nodules (4%). Apparent tumor necrosis was noted at CT in 51 nodules (89%). During follow-up (range, 3 months to 5 years; mean, 29 months ± 18 [SD]), local recurrence was seen in seven nodules (12%), three of which received repeat treatment with transthoracic PEI. Twenty-six patients survived, and 25 patients died of multiple tumors, hepatic failure, or rupture of esophageal varices.

CONCLUSION: Transthoracic PEI seems to be relatively safe and effective for the treatment of HCC not detectable with US.

© RSNA, 2002

Index terms: Alcohol ablation, 761.323, 761.1299 • Liver, interventional procedures, 761.1299 • Liver neoplasms, therapy, 761.12119, 761.323, 761.33

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