Renal Pseudoaneurysm Detected 3 Years after Cryoablation for Renal Cell Carcinoma

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  • Ueyama Tatsuya
    Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University Department of Radiology, Japan Community Health care Organization Kyushu Hospital
  • Ushijima Yasuhiro
    Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University
  • Asayama Yoshiki
    Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University
  • Nishie Akihiro
    Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University
  • Nakayama Tomohiro
    Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University
  • Takayama Yukihisa
    Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University
  • Kubo Yuichiro
    Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University
  • Ishimatsu Keisuke
    Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University
  • Ishigami Kousei
    Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University

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Other Title
  • 腎細胞癌に対する凍結療法後3年の経過で発見された腎仮性動脈瘤の1例

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We treated a patient with a pseudoaneurysm detected 3 years after cryoablation for renal cell carcinoma (RCC). The pseudoaneurysm was located in the hilar region of the kidney, which was the puncture route of the cryo-needle but outside the area of the cryoablation. The puncture through the renal hilum was thought to be one of the factors that led to the development of the pseudoaneurysm. Since the angiographic findings revealed the pseudoaneurysm to be accompanied by an arteriovenous fistula, we speculate that the arteriovenous fistula was first induced by the renal hilar puncture and that the pseudoaneurysm was formed by prolonged arterial pressure stimulation. The development of arteriovenous fistulae and pseudoaneurysms should be considered in cases in which cryoablation for RCC is performed by a puncture through the renal hilum.

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