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CT and MR imaging in lateral sinus thrombosis

Published online by Cambridge University Press:  29 June 2007

R. M. Irving ,
N. S. Jones ,
M. A. Hall-Craggs  and
B. Kendall
R. M. Irving*
Affiliation:
Departments of Otolaryngology, The Hospital for Sick Children, Great Ormond Street, London WC1N 3JH.
N. S. Jones
Affiliation:
Departments of Otolaryngology, The Hospital for Sick Children, Great Ormond Street, London WC1N 3JH.
M. A. Hall-Craggs
Affiliation:
Departments of Neuroradiology, The Hospital for Sick Children, Great Ormond Street, London WC1N 3JH.
B. Kendall
Affiliation:
Departments of Neuroradiology, The Hospital for Sick Children, Great Ormond Street, London WC1N 3JH.
*
Mr R. M. Irving, F.R.C.S., Department of Otolaryngology, Addenbrookes Hospital, Hills Road, Cambridge, CB2 2QQ.
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Abstact

Establishing a pre-operative diagnosis of lateral sinus thrombosis can be difficult, as the clinical features are non-specific and laboratory tests unhelpful. CT maydemonstrate abnormal high density of the lumen of the sinus, which does not enhance afterintravenous contrast medium. Enhancement of the dura surrounding the sinus may be prominent, causing the ‘empty triangle’ or ‘delta sign’ which may suggest the diagnosis. Magnetic resonance (MR) imaging may show both lack of flow and abnormal signal from the sinus, thus providing definitive evidence of thrombosis.

Keywords

ThrombosisLateral sinusRadiographyimaging
Type
View from Within: Radiology in Focus
Information
The Journal of Laryngology & Otology , Volume 105 , Issue 8 , August 1991 , pp. 693 - 695
Copyright
Copyright © JLO (1984) Limited 1991

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References

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