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Laryngeal imaging by computerized tomography and magnetic resonance following radiation therapy: a need for caution

Published online by Cambridge University Press:  29 June 2007

R. J. S. Briggs ,
A. P. Gallimore  and
D. J. Howard
R. J. S. Briggs*
Affiliation:
(London)
A. P. Gallimore
Affiliation:
(London)
D. J. Howard
Affiliation:
(London)
*
R. J. S. Briggs, The Institute of Laryngology and Otology, 330 Gray's Inn Road, London WC1X 8DA. Fax: 071 833 9480
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Abstract

For patients with laryngeal tumours, the use of computerized tomography (CT) or magnetic resonance imaging (MR) may facilitate accurate staging by the demonstration of cartilage invasion or tumour extension to areas such as the pre-epiglottic space. The role of imaging in the follow-up of patients after radiotherapy, however, has not been examined. A prospective study of 18 patients undergoing laryngectomy was performed. The results of pre-operative CT and MR imaging were correlated with the pathological findings from whole organ axial sections of the laryngeal specimens. In five patients (28 per cent) both CT and MR images were significantly impaired by movement artefact. In the eight patients without previous radiotherapy, seven had adequate quality imaging and both CT and MR accurately demonstrated the site, size and extent of laryngeal tumour. In eight of the ten patients following radiation therapy the presence of tumour was correctly identified, however there was a poor correlation between the imaging and pathological findings. Two patients had radionecrosis alone. Neither CT nor MR imaging could differentiate between radionecrosis and recurrent tumour.

Keywords

Tomography, X-ray computedMagnetic resonance imagingLarynxRadiotherapy
Type
Radiology in Focus
Information
The Journal of Laryngology & Otology , Volume 107 , Issue 6 , June 1993 , pp. 565 - 568
Copyright
Copyright © JLO (1984) Limited 1993

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Footnotes

Presented at the Annual Meeting of the Association of Head and Neck Oncologists of Great Britain, Royal Marsden Hospital, 24 April 1992.

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