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Emergency Radiology

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01.01.2011 | Pictorial Essay

Usual and unusual causes of splaying of the carotid artery bifurcation: the lyre sign—a pictorial review

verfasst von: Nanda Venkatanarasimha, Babajide Olubaniyi, Simon J. Freeman, Priya Suresh

Erschienen in: Emergency Radiology | Ausgabe 1/2011

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Abstract

The ‘Lyre’ sign describes the characteristic splaying of the carotid artery bifurcation due to a carotid body tumour (paraganglioma) on conventional carotid angiography. In this pictorial review, we describe and illustrate two cases demonstrating the equivalent Lyre sign on multi-detector computed tomography (MDCT) and ultrasound resulting from carotid body tumour and extra-cranial internal carotid artery pseudoaneurysm. Both of these pathologies can manifest acutely and warrant accurate diagnosis to prevent potential catastrophic consequences. We also emphasise the added value of MDCT in making a definitive diagnosis and discuss other differential considerations splaying the carotid bifurcation.

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Titel: Usual and unusual causes of splaying of the carotid artery bifurcation: the lyre sign—a pictorial review
verfasst von: Nanda Venkatanarasimha
Babajide Olubaniyi
Simon J. Freeman
Priya Suresh
Publikationsdatum: 01.01.2011
Verlag: Springer-Verlag
Erschienen in: Emergency Radiology / Ausgabe 1/2011
Print ISSN: 1070-3004
Elektronische ISSN: 1438-1435
DOI: https://doi.org/10.1007/s10140-010-0907-6

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