Laryngoscopy in patients with laryngeal cancer

Laryngoscopy in patients with laryngeal cancer:

(1) Indirect laryngoscopy This is the most important routine examination method. This examination can detect the location, size, shape and range of laryngeal lesions, but it is easy to miss lesions on the laryngeal surface of the epiglottis, anterior symphysis and subglottic area.

(2) Direct laryngoscopy can make up for the shortcomings of indirect laryngoscopy and better expose lesions on the laryngeal surface of the epiglottis, anterior commissure and subvocal area, and can perform biopsy at the same time.

(3) Dynamic stroboscopic laryngoscopy can observe subtle activities that cannot be seen under ordinary laryngoscopes, and various pathological vibrations of the vocal cords, such as the disappearance of mucosal fluctuations in the lesion or the disappearance of amplitude in the lesion, which indicate the possibility of tumors.

(4) Fiberoptic laryngoscopy is a soft and bendable instrument that causes little pain to the patient. It is simple and safe to operate and can be used for seriously ill patients and the elderly and infirm. The light is bright and can be placed inside the cavity, so it is easy to observe areas that cannot be examined by other methods, such as the laryngeal ventricle. It helps to find early lesions and can be used with a stroboscopic light source to observe the dynamics of the larynx. Lesions can be filmed or recorded, and biopsies can be performed at the same time.

(5) Microlaryngoscopy consists of two parts: a surgical microscope and a supported laryngoscope (or a suspended laryngoscope). It can well expose the structures of the laryngeal cavity and detect early lesions. Microsurgery can be performed with both hands and can be photographed and recorded. However, the equipment is expensive and must be performed under general anesthesia, so it is currently mostly used to remove early vocal cord lesions.