Renal artery fibromuscular dysplasia (FMD) can cause arterial stenosis, dissection, and aneurysm of renal arteries. This study aimed to analyze the clinical characteristics and evaluate the long-term outcomes of renal branch artery FMD in children and adults.
Sixty-one patients with renal artery FMD underwent endovascular treatment, including 23 children and 38 adults. They were divided into two groups, the main artery FMD group (n = 40, with severe stenosis located in the main renal artery) and the branch artery FMD group (n = 21, with only the branch lesions in unilateral or bilateral branch artery). The clinical characteristics and long-term outcomes of these pediatric and adult patients were evaluated.
The incidence of branch FMD was higher in children than in adults (P = 0.005). Thirteen children showed one or more branch artery involvements. Hypertension and headache were the most common symptoms. The branch aneurysm with coexisting stenosis was more common in patients with branch artery FMD. During the follow-up, blood pressure was normal in 8 patients and lowered in 11 patients in the branch FMD group. The patient’s glomerular filtration was increased in 61 patients (P < 0.001). Four-year freedom from reintervention in 21 branch artery FMD patients was lower than that in 40 main artery FMD patients (P < 0.05).
A higher incidence of renal branch artery FMD was observed in children than in adults. Endovascular treatment with balloon angioplasty can be used for treating renal branch artery FMD.
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This study was supported by the National Natural Science Foundation of China (grant number 81301328) and Henan Provincial Medical Science and Technology Research Program (grant number 201602216).
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Li, K., Cui, M., Zhang, K. et al. Clinical characteristics and long-term outcomes of endovascular treatment of renal artery fibromuscular dysplasia with branch lesions. Pediatr Nephrol 36, 3169–3180 (2021). https://doi.org/10.1007/s00467-021-05067-y
- Fibromuscular dysplasia
- Renal artery stenosis
- Renal artery aneurysm