In patients with cancer of the larynx without macroscopically visible neoplastic lesions in the anterior commissure, cannot be excluded its microinfilration. Changed with age anterior commissure' Broyles ligament by the process of neovascularization and ossification is not an effective protection against the spread of cancer. Directions and the ways of cancer spread in the anterior commissure is similar in men and women. AC classification can be important in qualifying patients for organ preservation surgery and should be supplemented by an additional AC4 degree, taking into account subglottic changes in the anterior commissure of the larynx.