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Multidetector-row computed tomography in the diagnosis of Collet–Sicard syndrome

¹ Department of Radiology, The Clinics Hospital of the University of Sao Paulo, School of Medicine, Sao Paulo, Brazil
² Department of Neurology, The Clinics Hospital of the University of Sao Paulo, School of Medicine, Sao Paulo, Brazil
³ Department of Radiology, University of Minnesota Medical School, and the Hennepin County Medical Center, Minneapolis, MN, USA

Correspondence to:
Leandro Tavares Lucato, Rua Professor Pedreira de Freitas, 372 ap. 101-E, Sao Paulo, Brazil, CEP 03312-052; ltlucato@uol.com.br

Accepted for publication 3 September 2007

The first 150 words of the full text of this article appear below.

Collet–Sicard syndrome (CSS) refers to the unilateral lesion of cranial nerves IX to XII. The cause in this case is spontaneous dissection of the internal carotid artery (ICA), for which multidetector-row computed tomography (MDCT) images were critical for diagnosis.

	CASE REPORT

 
A 54-year-old man noticed an onset of headache, hoarse voice and swallowing compromise. Neurological examination disclosed left-sided palsies of cranial nerves IX to XII.

MDCT demonstrated coiling of the cervical distal portion of left ICA (fig 1A), narrowed lumen, mural thickening, increased external diameter and a thin annular ring of enhancement ("target appearance")¹ (fig 1A, B). Signs of nerve dysfunction were also noticed (fig 2).

View larger version (62K):   Figure 1 Multidetector-row CT axial images (A and B) show coiling of left internal carotid artery (A), and crescent-shaped wall thickening (arrows, A and B). Figure B better demonstrates the narrowed eccentric lumen, an increase in external diameter and a faint enhancement . . . [Full text of this article]