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. 2011 Feb 1;2011(2):2.
doi: 10.1093/jscr/2011.2.2.

Pseudo-lyre sign

R Nash  1 , R Farrell  1
Affiliations

Pseudo-lyre sign

R Nash et al. J Surg Case Rep. .

Abstract

Carotid body tumours cause characteristic splaying of the internal and external carotid arteries, known as 'Lyre Sign'. Vagal paragangliomas are rare tumours that arise from glomus cells along the length of the vagus nerve. We present a case in which a vagal paraganglioma has arisen from the vagus nerve at the carotid bifurcation, and has mimicked the 'Lyre Sign' of a carotid body tumour.

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Figures

Figure 1
Figure 1
Transverse section of unenhanced CT imaging displaying a parapharyngeal tumour.
Figure 2
Figure 2
Coronal T1 weighted MRI section of the tumour demonstrating the salt-and-pepper appearances of flow voids and vascular stasis within the vascular tumour
Figure 3
Figure 3
Magnetic resonance angiography demonstrating ‘Lyre Sign’ – splaying of the internal and external carotid arteries
See this image and copyright information in PMC

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