Abstract
THE THERAPIST, when confronted with cancer of the larynx, should have an intimate knowledge of the normal laryngeal structures and a competency in indirect mirror examination of them. The value of soft-tissue films (5, 6), laryngeal tomography (5, 6, 9), and contrast examination (13) has been firmly established. If possible, these studies should be performed as part of the work-up, particularly if the disease involves other than the true cord. The authors' classification of anatomical levels of the larynx and laryngopharynx shown in Figure 1 is based mainly on Baclesse's and Lederman's (10) subdivisions. The modified classification of levels in this figure differs from Lederman's in that here the epiglottis is regarded as a separate supraglottic structure, whereas Lederman considers the infrahyoid part of the epiglottis a supraglottic structure and the suprahyoid epiglottis as part of the laryngopharynx. In our experience, such a subdivision of the epiglottis is not helpful and has no particular meaning t...
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