Behavior of cancer at the anterior commissure of the larynx.

The present research is concerned with the behavior of the vestibular cancer with respect to the portion of the anterior commissure of the larynx which the authors have named the "x-space." The research is based on the analysis of semiseriated vertical sections showing cancers of the vestibule in stages T1 and T2 with histological gradings 1 and 2. The specimens show that, at least in the early stages of the neoplastic spread, the fibrous structures of the x-space act as a fairly effective barrier to deep diffusion of the tumor. This fact enables the surgeon to estimate macroscopically the lower borders of the tumor growth on the basis of the superficial spread of the cancer in the zone of the x-space.