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  • Title: [Non-real-time computed tomography-guided percutaneous ethanol injection therapy for hepatocellular carcinoma undetectable by ultrasonography].
    Author: Ueda K, Ohkawara T, Minami M, Sawa Y, Morinaga O, Kohli Y, Ohkawara Y.
    Journal: Gan To Kagaku Ryoho; 1998 Jul; 25(9):1254-8. PubMed ID: 9703802.
    Abstract:
    The purpose of this study was to evaluate the feasibility of non-real-time CT-guided percutaneous ethanol injection therapy (PEIT) for hepatocellular carcinoma (HCC, 37 lesions) untreatable by ultrasonography-guided (US)-PEIT. The HCC lesion was localized on the lipiodol CT image with a graduated grid system. We advanced a 21 G or 22 G needle in a stepwise fashion with intermittent localization scans using a tandem method to position the tip of the needle in the lesion. Ethanol containing contrast medium was injected with monitoring scans obtained after incremental volumes of injection, until perfusion of the lesion was judged to be complete. A total of 44 CT-PEIT procedures were performed. The average number of needle passes from the skin to the liver in each CT-PEIT procedure was 2.3, the average amount of ethanol injected was 14.4 ml, and the average time required was 49.3 minutes. Complete perfusion of the lesion by ethanol on monitoring CT images was achieved in all lesions with only a single or double CT-PEIT procedure without severe complication. Local recurrence was detected only in 5 lesions. At present, it is more time-consuming to perform CT-PEIT than US-PEIT because conventional CT guidance is not real-time imaging. However, it is expected that this limitation of CT-PEIT will be overcome in the near future with the introduction of CT fluoroscopy. In conclusion, CT-PEIT should prove to be a feasible, acceptable treatment for challenging cases of HCC undetectable by US.
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