Apparent diffusion coefficient in the resolution of renal ischemia after angioplasty on diffusion-weighted imaging: Renal artery stenosis caused by progressive thrombosis in residual chronic aortic dissection

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Abstract

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.

Original languageEnglish
Pages (from-to)1173-1177
Number of pages5
JournalInternal Medicine
Volume59
Issue number9
DOIs
Publication statusPublished - 2020 Jan 1

Keywords

  • Angioplasty
  • Diffusion-weighted MRI
  • Renal artery stenosis
  • Renal ischemia
  • Renovascular disease

ASJC Scopus subject areas

  • Internal Medicine

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