Interventional Radiology
Online ISSN : 2432-0935
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Case Report
  • Rakuhei Nakama, Takashi Kadoya, Takuya Kimura, Kazukiyo Arakawa, Takay ...
    Type: Case Report
    2021 Volume 6 Issue 1 Pages 1-3
    Published: 2021
    Released: February 28, 2021
    [Advance publication] Released: January 29, 2021
    JOURNALS OPEN ACCESS

    A 90-year-old woman prescribed with apixaban was admitted to a hospital after a ground-level fall. She was transferred to our hospital for advanced evaluation and treatment. Contrast-enhanced computed tomography showed a pseudoaneurysm inside the right gluteus maximus muscle. Angiography revealed an aneurysm of the peripheral branch of the inferior gluteal artery and multiple slight pseudoaneurysms of the peripheral branch of the internal iliac artery. We performed transcatheter arterial embolization using a gelatin sponge. After embolization, the hemoglobin stabilized. She was transferred to another hospital for rehabilitation. The use of direct oral anticoagulants in the elderly can lead to significant hemorrhage with minimal trauma. Transcatheter arterial embolization is a minimally invasive and safe procedure for such cases of trauma.

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  • Seiji Kamei, Takahiro Yamamoto, Hiroaki Okada, Yuki Kinbara, Kyohei Ta ...
    Type: Case Report
    2021 Volume 6 Issue 1 Pages 4-8
    Published: 2021
    Released: February 28, 2021
    JOURNALS OPEN ACCESS

    We report the usefulness of cone-beam computed tomography angiography (CBCTA) and automated vessel detection (AVD) software in transcatheter arterial embolization in two cases of obscure ascending colonic diverticular hemorrhage after unsuccessful endoscopic clipping. Arteriography of the superior mesenteric artery demonstrated no active bleeding. Considering the positional relationship of the clips, we could narrow the responsible vessel down to two candidates but could not definitively identify the responsible vessel. We performed CBCTA at the marginal artery of the right colic artery, and the responsible branch was identified using AVD. The responsible vessel could be embolized, and hemostasis was achieved with no ischemic complications. CBCTA and AVD software for colonic diverticular hemorrhage after endoscopic clipping were useful for identifying the responsible vessel and in performing selective embolization.

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  • Shiro Miyayama, Masashi Yamashiro, Rie Ikeda, Junichi Matsumoto, Nobuh ...
    Type: Case Report
    2021 Volume 6 Issue 1 Pages 9-13
    Published: 2021
    Released: February 28, 2021
    JOURNALS OPEN ACCESS

    We report a case of cerebral embolism caused by balloon-occluded retrograde transvenous obliteration (BRTO) for gastric varices in a 77-year-old woman with liver cirrhosis. Balloon-occluded retrograde venography demonstrated multiple collaterals between the efferent and systemic veins, and some of them could not be embolized with metallic coils. Therefore, they were embolized with ethanol, 50% glucose solution, gelatin sponge particles, and ethanolamine oleate, and BRTO was completed. After BRTO, however, the patient complained of mild aphagia and paralysis of the right fingers, and magnetic resonance imaging demonstrated cerebral embolism. The symptoms gradually improved after the administration of ozagrel sodium and rehabilitation. The varices were also completely thrombosed. Patent foramen ovale was suspected as a cause of cerebral embolism.

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  • Yusuke Ono, Keigo Osuga, Keisuke Nagai, Hidenari Hongyo, Yasushi Kimur ...
    Type: Original Research
    2021 Volume 6 Issue 1 Pages 14-20
    Published: 2021
    Released: February 28, 2021
    JOURNALS OPEN ACCESS

    Purpose: To compare the efficacy and safety between epirubicin-loaded DC Beads (DCB-TACE) and conventional TACE (cTACE) used in transarterial chemoembolization (TACE) for hepatocellular carcinoma (HCC).

    Materials and Methods: This retrospective study enrolled 64 patients (mean age, 73.3 years; 44 men, 20 women) who underwent initial DCB-TACE between 2014 and 2015, and 66 patients (mean age, 71.3 years; 38 men, 28 women) who underwent initial cTACE between 2011 and 2013 as historical controls. Treatment effects on the target lesions at 3 months after TACE, the period until re-treatment of the target lesion, and adverse events after TACE were compared between the groups. Univariate and multivariate analyses were also performed to estimate the factors influencing the treatment effects.

    Results: Based on the Response Evaluation Criteria in Cancer of the Liver version 2015, treatment response of the target lesions equivalent to a complete response and termed as TE4, was 51.0% (53/104) in the DCB-TACE group and 74.4% (64/86) in the cTACE group (p<0.001). Multivariate analysis revealed that the TACE procedure, Child-Pugh score, serum aspartate aminotransferase (AST) level, alpha fetoprotein level, and tumor size were independent significant predictors of TE4. The frequencies of elevated serum AST and alanine transaminase levels after TACE were significantly lower in patients in the DCB-TACE group (p<0.001 each). No significant difference in biliary/liver damage was evident between the groups.

    Conclusion: The local efficacy of cTACE was higher than that of DCB-TACE. Adverse events were milder after DCB-TACE than after cTACE.

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