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Epithelial-myoepithelial carcinoma of the parotid gland. An unusual cause of ear canal stenosis

Published online by Cambridge University Press:  29 June 2007

D. P. C. Lau*
Affiliation:
Department of Otolaryngology, Addenbrookes Hospital, Hills Road, Cambridge, UK.
M. J. Goddard
Affiliation:
Department of Histopathology, Addenbrookes Hospital, Hills Road, Cambridge, UK.
I. D. Bottrill
Affiliation:
Department of Otolaryngology, Addenbrookes Hospital, Hills Road, Cambridge, UK.
D. A. Moffat
Affiliation:
Department of Otolaryngology, Addenbrookes Hospital, Hills Road, Cambridge, UK.
*
Address for correspondence: Dr David Lau, Department of Otolaryngology, Addenbrooke's Hospital, Hills Road, Cambridge CB2 2QQ. Fax: 01223 217559

Abstract

Epithelial-myoepithelial carcinoma (EMC) accounts for approximately one per cent of salivary gland tumours. This tumour is gaining wider recognition following inclusion into the WHO histological classification of salivary gland tumours in 1990. Salivary gland tumours characteristically present with an enlarging mass. We describe an unusual presentation of a salivary gland tumour with stenosis of the external ear canal in the absence of a palpable mass. EMC usually arises from the salivary glands but isolated cases have been described arising primarily from the paranasal sinuses, trachea and lacrimal gland. The management of this tumour is still evolving with surgical excision being the main-stay of treatment. The efficacy of radiotherapy has not yet been established but high local recurrence rates despite apparently adequate excision and the possibility of a multicentric origin of the tumour may herald an increasing role for radiotherapy in the future. We stress the importance of awareness of adjacent structures when considering the cause of cartilaginous canal stenosis.

Type
Pathology in Focus
Copyright
Copyright © JLO (1984) Limited 1996

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