Interventional Radiology
Online ISSN : 2432-0935
Volume 7, Issue 1
Displaying 1-7 of 7 articles from this issue
Original Research
  • Motoma Kanaya, Noriyuki Miyamoto, Takaaki Fujii, Kyohei Kudo, Naoya Ki ...
    Article type: Original Research
    2022 Volume 7 Issue 1 Pages 1-8
    Published: March 01, 2022
    Released on J-STAGE: March 01, 2022
    Advance online publication: February 04, 2022
    JOURNAL OPEN ACCESS

    Purpose: To evaluate the feasibility and safety of transarterial injection of a miriplatin-iodized oil suspension combined with Emprint miriplatin-iodized oil suspension-microwave ablation in patients with medium-sized (3-5 cm) hepatocellular carcinomas.

    Materials and Methods: This retrospective study included a total of 11 patients with 12 hepatocellular carcinomas (mean size, 3.6 ± 0.6 cm) underwent miriplatin-iodized oil suspension-microwave ablation. Microwave ablation was performed under the guidance of computed tomography fluoroscopy following transarterial miriplatin-iodized oil suspension injection on the same day. Technical success, complications, and local tumor progression were assessed.

    Results: The primary and secondary technical success rates were 75.0% and 100%, respectively. The number of treatment sessions per nodule was 1.25 ± 0.45. A total 15 sessions were required to achieve technical success (one session in nine lesions, two sessions in three lesions). Two major complications (pneumothorax [n = 1] and hemorrhage [n = 1]) occurred (2/15, 13.3%). No local tumor progression was observed during the follow-up period (mean 12.0 ± 2.0 months, range 2.7-23.9 months).

    Conclusions: Miriplatin-iodized oil suspension-microwave ablation for medium-sized hepatocellular carcinomas can be safely performed with good local control.

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  • Junichi Taniguchi, Haruyuki Takaki, Yuichi Sugino, Nahomi Yoshimura, R ...
    Article type: Original Research
    2022 Volume 7 Issue 1 Pages 9-16
    Published: March 01, 2022
    Released on J-STAGE: March 01, 2022
    Advance online publication: February 04, 2022
    JOURNAL OPEN ACCESS

    Purpose: To clarify the utility of microballoon catheter in renal arterial ethanol embolization of renal angiomyolipoma (AML).

    Material and Methods: A total of 20 patients (15 women, 5 men) with median age of 45 years (39-60 years) underwent embolization to treat 22 AMLs. A mixture of ethanol and iodized oil was injected into the feeding arteries of 13 tumors using balloon occlusion (the balloon embolization group) with a microballoon catheter and 9 tumors without using balloon occlusion (the non-balloon embolization group). Changes in the maximum tumor diameter, tumor volume, and adverse events were evaluated.

    Result: The median baseline maximum tumor diameters and volumes were 6.3 cm and 61.4 cm3 in the balloon embolization group, and 4.6 cm and 40.1 cm3 in the non-balloon embolization group, respectively. Tumor enhancement disappeared on postembolization angiography in all cases. All tumors shrunk after embolization. There were no statistically significant differences in the percent decrease in the maximum tumor diameter and volume at 10-12 month between balloon occlusion group (31.5% and 67.9%) and control group (34.8% and 62.6%). Fever was significantly more frequent when balloon occlusion was used: 38% vs. 0% (p = 0.03). No major complication was observed in either patient group.

    Conclusions: Balloon occlusion may not affect tumor shrinkage when embolizing AMLs with a mixture of ethanol and lipiodol.

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Case Report
  • Naoya Kinota, Hiroshi Kodama, Taiki Moriyama, Junichi Taniguchi, Mitsu ...
    Article type: Case Report
    2022 Volume 7 Issue 1 Pages 17-20
    Published: March 01, 2022
    Released on J-STAGE: March 01, 2022
    Advance online publication: January 12, 2022
    JOURNAL OPEN ACCESS

    In this study, we report two cases in which intranodal lymphangiography helped improve congenital chylothorax due to RASopathies. We performed lymphangiography after conservative treatments failed to improve chylothorax in an 8-year-old girl with cardiofaciocutaneous syndrome and a 2-month-old boy with Noonan syndrome. Inguinal lymph nodes were punctured with 25-gauge needles under ultrasonographic guidance, and 4 and 1 mL of iodized oil were injected, respectively, showing a backflow of iodized oil into the lungs. Chylothorax had improved in both patients after nodal lymphangiography. However, the second child experienced worsening of disease-associated extremity edema and died of sepsis 4 months later.

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  • Koki Kato, Syunkichi Sasazawa, Takashi Hazama, Kei Ishimura, Keiichi T ...
    Article type: Case Report
    2022 Volume 7 Issue 1 Pages 21-25
    Published: March 01, 2022
    Released on J-STAGE: March 01, 2022
    Advance online publication: February 04, 2022
    JOURNAL OPEN ACCESS

    We present the cases of two patients who underwent ureteral occlusion using coils and/or Amplatzer Vascular Plug with N-butyl cyanoacrylate glue after extensive advanced rectal surgery. Both patients had complex urine leaks unresponsive to urinary diversion. In view of the progress of the disease and the history of polysurgery, reconstructive surgery or anterograde ureteral stent insertion was not chosen. All patients had immediate resolution of urinary leakage after ureteral embolization, resulting in symptom relief throughout the follow-up period. There were no procedure-related complications or side effects.

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  • Naoki Kawakami, Fumiya Uchiyama, Akinori Harada, Tetsuhisa Yamada, Jun ...
    Article type: Case Report
    2022 Volume 7 Issue 1 Pages 26-29
    Published: March 01, 2022
    Released on J-STAGE: March 01, 2022
    Advance online publication: January 12, 2022
    JOURNAL OPEN ACCESS

    Postpartum hemorrhage (PPH) remains a leading cause of maternal mortality. Transcatheter arterial embolization (TAE) is an effective treatment option for PPH. Among the vessels embolized, the inferior mesenteric artery (IMA) is usually not the first choice for TAE, because it is a rare source of bleeding in PPH. In this report, we describe our experience with two patients with PPH, in whom the IMA was selected on the basis of contrast-enhanced computed tomography (CECT) findings, and prompt hemostasis was achieved with TAE. CECT can provide useful clues as to the culprit artery based on the anatomical location of the hematoma and extravasation. These useful findings of CECT allow prompt TAE of rare sources of bleeding in PPH, such as the IMA.

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  • Sho Sosogi, Daisuke Abo, Ryo Morita, Takeshi Soyama, Bunya Takahashi, ...
    Article type: Case Report
    2022 Volume 7 Issue 1 Pages 30-33
    Published: March 01, 2022
    Released on J-STAGE: March 01, 2022
    Advance online publication: February 04, 2022
    JOURNAL OPEN ACCESS

    A 90-year-old female presented with poor right groin wound healing due to lymphorrhea and infection following a surgical cutdown procedure for arterial revascularization. Although negative pressure wound therapy (NPWT) and inguinal lymphadenectomy were performed, infection and lymphorrhea did not heal. Lymphangiography via a right inguinal lymph node revealed lymphatic leakage in the wound. Intranodal glue embolization (IGE) was performed by injecting 0.6 mL of 33% n-butyl-2 cyanoacrylate (NBCA) -lipiodol mixture. Additionally, the presence of glue in an open wound was directly confirmed in this case. After embolization, lymphorrhea ceased, and the wound healed completely. No lymphorrhea recurrence or complications were observed for 6 months. This case suggests that IGE could be an effective treatment for groin lymphorrhea.

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  • Takuji Maruyama, Shuji Kariya, Miyuki Nakatani, Yasuyuki Ono, Yutaka U ...
    Article type: Case Report
    2022 Volume 7 Issue 1 Pages 34-36
    Published: March 01, 2022
    Released on J-STAGE: March 01, 2022
    JOURNAL OPEN ACCESS

    An 80-year-old woman who underwent subtotal esophagectomy with gastric tube reconstruction for esophageal cancer developed carcinoma of the left upper gingiva. The local recurrence of the gingival carcinoma resulted in trismus and prevented oral intake. Then she underwent a percutaneous transesophageal jejunostomy tube placement in the preserved cervical esophagus. Enteral feeding continued for three months with no complications until oral intake was possible. A percutaneous transesophageal jejunostomy is possible using the postoperatively preserved cervical esophagus.

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