Laryngeal cysts: clinical relevance of a modified working classification.

Laryngeal cysts from 72 patients were examined and reclassified according to a modified working classification. In this series, 47 patients (66 per cent) had epithelial cysts, 11 patients (15 per cent) oncocytic cysts and 14 patients (19 per cent) tonsillar cysts. Epithelial cysts were commonest in the region of the epiglottis (20/47) and laryngeal ventricle (24/47). Oncocytic cysts tended to lie in the region of the ventricle whereas tonsillar cysts occurred almost exclusively in the valleculae, epiglottis and pyriform region (13/14). The authors conclude that the modified working classification of laryngeal cysts is easy to apply, of clinical relevance, and allows classification of cysts where operative trauma to the specimen obscures the relationship of the cyst to the surface epithelium. The origin and significance of tonsillar cysts are discussed and a relationship to the lympho-epithelial cyst of the oral cavity is suggested.

Out-patient examination of the upper airway: a survey of current practice in the UK.

Questionnaires have been sent to all ENT Consultants practising in the UK in an attempt to establish current practice with regard to out-patient examination of the upper aerodigestive tract. Seventy-eight per cent of these were returned completed. The results indicate that mirror examination remains the most widely used method, though the fibreoptic rhinolaryngoscope and/or the Hopkins rod telescope are now used by many specialists. Mirrors are most frequently warmed by a spirit lamp, despite the fact that 125 respondents reported having had a fire in their departments. Other methods of warming mirrors are discussed.

Plasma cell granuloma of the larynx (case report and review of the literature).

A case is reported of Plasma Cell Granuloma of the larynx treated successfully with steroids and antibiotics.

Ear drops and grommets.

The relative ease with which different ear drops pass through grommets of different designs has been investigated using a laboratory model. The viscosities of the various ear drop preparations tested have also been determined. There is a considerable variation in the volume of ear drops required to penetrate ventilation tubes. Their ease of passage is determined by the size of the tube and is probably also related to the ease with which a preparation wets the surface of the grommet. There is no relationship between ease of penetration and viscosity. The penetration of ear drops through grommets during episodes of aural discharge was studied in vivo. Penetration into the middle ear was observed only when the drops were introduced using the displacement technique. It was more readily achieved when the grommet lumen was free of discharge.