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01-03-2011 | Original Article

Spectrum of renal findings in pediatric fibromuscular dysplasia and neurofibromatosis type 1

Authors: Abhay Srinivasan, Ganesh Krishnamurthy, Lucia Fontalvo-Herazo, Els Nijs, Kevin Meyers, Bernard Kaplan, Anne-Marie Cahill

Published in: Pediatric Radiology | Issue 3/2011

Abstract

Background

Fibromuscular dysplasia (FMD) and neurofibromatosis type 1 (NF1) are the most common causes of pediatric renal artery stenosis (RAS) in western countries, and characterization of their angiographic features could aid in an accurate diagnosis and in treatment.

Objective

This study characterizes renal angiographic findings in pediatric fibromuscular dysplasia (FMD) and neurofibromatosis type 1(NF1).

Materials and methods

We reviewed 68 angiograms performed over 11 years on 43 children with renovascular hypertension (20 male, 23 females; ages 1 month to -19 years; median/average 9.8 years). Ten patients were diagnosed with NF1, and 33 had presumed FMD. The frequency, extent and distribution of lesions were determined and analyzed.

Results

Stenosis was found in 91% of patients (n = 39/43), with 86% showing stenosis of 1st or 2nd order arteries, and 12% distal to 2nd order. Stenoses in multiple 1st/2nd order arteries were found in 32% of patients, and 36/43 patients had 1-2 stenoses. The most common lesion was a ≤5 mm stenosis in a 1st/2nd order artery, in 42%. Mean percentage of stenosis in a 1st/2nd order vessel was 62%; ≥70% stenosis was found in 53%, and ≥90% stenosis in 29%. Bilateral disease was noted in 30% of patients. Intraparenchymal disease, distal to 2nd order branches, was seen in 30%. Aneurysms were seen in 28%, beading in 19% and collaterals in 51% (associated with ≥70% stenosis). Mid-aortic narrowing was seen in 16%, more often in patients with NF1.

Conclusion

We provide a descriptive characterization of renal angiographic findings in pediatric FMD and NF1.

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Title: Spectrum of renal findings in pediatric fibromuscular dysplasia and neurofibromatosis type 1
Authors: Abhay Srinivasan
Ganesh Krishnamurthy
Lucia Fontalvo-Herazo
Els Nijs
Kevin Meyers
Bernard Kaplan
Anne-Marie Cahill
Publication date: 01-03-2011
Publisher: Springer-Verlag
Published in: Pediatric Radiology / Issue 3/2011
Print ISSN: 0301-0449
Electronic ISSN: 1432-1998
DOI: https://doi.org/10.1007/s00247-010-1854-9

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Spectrum of renal findings in pediatric fibromuscular dysplasia and neurofibromatosis type 1

Abstract

Background

Objective

Materials and methods

Results

Conclusion

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Background

Objective

Materials and methods

Results

Conclusion

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