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Research ArticleHead & Neck

The Many Faces of Persistent Stapedial Artery: CT Findings and Embryologic Explanations

Z.J. LoVerde, D.P. Shlapak, J.C. Benson, M.L. Carlson and J.I. Lane
American Journal of Neuroradiology January 2021, 42 (1) 160-166; DOI: https://doi.org/10.3174/ajnr.A6851
Z.J. LoVerde
aFrom the Department of Radiology (Z.J.L., D.P.S., J.C.B., J.I.L.)
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D.P. Shlapak
aFrom the Department of Radiology (Z.J.L., D.P.S., J.C.B., J.I.L.)
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  • ORCID record for D.P. Shlapak
J.C. Benson
aFrom the Department of Radiology (Z.J.L., D.P.S., J.C.B., J.I.L.)
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M.L. Carlson
bOtolaryngology-Head and Neck Surgery (M.L.C.), Mayo Clinic, Rochester, Minnesota
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J.I. Lane
aFrom the Department of Radiology (Z.J.L., D.P.S., J.C.B., J.I.L.)
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Abstract

SUMMARY: Persistent stapedial artery is a vascular anomaly with both clinical and surgical implications. Because of its scarcity, however, it remains underrecognized on imaging. Presented here is a series of 10 cases, demonstrating characteristic CT findings associated with this vascular anomaly and its most common pathognomonic imaging signs. The variable morphologic configurations and their corresponding embryologic underpinnings are described. Clinical and surgical implications of this rare anomaly are discussed.

ABBREVIATION:

PSA
persistent stapedial artery
MMA
middle meningeal artery
CCA
common carotid artery
CTC
caroticotympanic canaliculus
ITC
inferior tympanic canaliculus
CHL
conductive hearing loss
ECA
external carotid artery
ICA
internal carotid artery
CTA
caroticotympanic artery
ITA
inferior tympanic artery
FNC
facial nerve canal
  • © 2021 by American Journal of Neuroradiology
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American Journal of Neuroradiology: 42 (1)
American Journal of Neuroradiology
Vol. 42, Issue 1
1 Jan 2021
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The Many Faces of Persistent Stapedial Artery: CT Findings and Embryologic Explanations
Z.J. LoVerde, D.P. Shlapak, J.C. Benson, M.L. Carlson, J.I. Lane
American Journal of Neuroradiology Jan 2021, 42 (1) 160-166; DOI: 10.3174/ajnr.A6851

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The Many Faces of Persistent Stapedial Artery: CT Findings and Embryologic Explanations
Z.J. LoVerde, D.P. Shlapak, J.C. Benson, M.L. Carlson, J.I. Lane
American Journal of Neuroradiology Jan 2021, 42 (1) 160-166; DOI: 10.3174/ajnr.A6851
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