Apparent Diffusion Coefficient in the Resolution of Renal Ischemia after Angioplasty on Diffusion-weighted Imaging: A Case of Renal Artery Stenosis Caused by Progressive Thrombosis in Residual Chronic Aortic Dissection

Eikan Mishima; Hideki Ota; Takehiro Suzuki; Takafumi Toyohara; Kazumasa Seiji; Sadayoshi Ito; Yoshikatsu Saiki; Kei Takase; Takaaki Abe

doi:10.2169/internalmedicine.3855-19

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Apparent Diffusion Coefficient in the Resolution of Renal Ischemia after Angioplasty on Diffusion-weighted Imaging: A Case of Renal Artery Stenosis Caused by Progressive Thrombosis in Residual Chronic Aortic Dissection

Eikan Mishima, Hideki Ota, Takehiro Suzuki, Takafumi Toyohara, Kazumasa Seiji, Sadayoshi Ito, Yoshikatsu Saiki, Kei Takase, Takaaki Abe

著者情報

キーワード: diffusion-weighted MRI, renal ischemia, renal artery stenosis, renovascular disease, angioplasty

ジャーナルオープンアクセス早期公開

論文ID: 3855-19

DOI https://doi.org/10.2169/internalmedicine.3855-19

この記事には本公開記事があります。

The final version of this article is now available: Vol. 59 (2020), No. 9 pp. 1173-1177

詳細

抄録

We report a case in which diffusion-weighted magnetic resonance imaging (DWI) demonstrated renal artery stenosis-related renal ischemia and the therapeutic efficacy of revascularization. The patient was a 73-year-old man, who underwent descending thoracic aortic replacement due to DeBakey IIIb chronic aortic dissection, and who showed progressive renal dysfunction due to right renal artery stenosis caused by false lumen thrombosis. DWI demonstrated a decreased apparent diffusion coefficient (ADC) in the right kidney, indicating renal ischemia. Angioplasty with stenting restored renal perfusion and improved the renal function, resulting in the normalization of the decreased ADC in the treated kidney. Thus, DWI can be used to monitor renal ischemia in cases involving advanced renal artery stenosis.

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