Letters to the Editor

St Guily J Lacau Zhang K-X Périé S Copin H Butler-Browne GS Barbet JP . Improvement of dysphagia following cricopharyngeal myotomy in a group of elderly patients. Histochemical and biochemical assessment of the cricopharyngeal muscle. Ann Otol Rhinol Laiyngol 1995;104: 603–9.

Cruse J Edwards D Smith J Wylle J . The pathology of a cricopharyngeal dysphagic. Histopathology 1979;3: 223–32.

Mounier-Kuhn P Labayle J Haguenauer JP Poncet P Traissac L . La bouche de l'oesophage. Rapport de la Société Française d'Oto-Rhino-Laryngologie et de Pathologie Cervico-Faciale. Paris, France: Arnette, 1971: 63–97.

Bonington A Manon M Whitmore I . A histological and histochemical study of the cricophaiyngeus muscle in man. J Anat 1988; 156: 27–37.

Brownlow H Whitmore I Willan PLT . A quantitative study of the histochemical and morphometric characteristics of the human cricophaiyngeus muscle. J Anat 1989;166: 67–75.