KLEINSASSER in 1961,1 described a successful technique of microlaryngoscopy using a uni-ocular field-glass type of prism and lens system. He has made some excellent photographic studies of laryngeal conditions at tenfold magnification.
Interesting features of microlaryngoscopy he found include clear visualization of the capillaries of the vocal cords.
In early malignancy these present interesting and characteristic features, such as angling and U-shapes, punctate appearances, and hooks on the surface.
The normal vocal epithelium is glistening white and translucent. In edema it is lifted from the body of the vocal cord. The various forms and stages of keratinization, from chronic laryngitis verging into patchy keratosis, as in chronic laryngitis, to Virchow's pachyderma where early malignancy is already established, can be discerned by observing the capillaries and irregularities of the mucosal surface. Mild irregularities going on to characteristic cauliflower formation are detected easily. Palpation with a long fine probe can be
Julius Fine. Microlaryngoscopy With a New Laryngoscope. Arch Otolaryngol. 1967;85(2):216–217. doi:10.1001/archotol.1967.00760040218017