This text prepares medical personnel, specialized or not, in modern identification techniques of lesions and conditions presumably indicative of cancer, in order to detect it in early stages and to provide appropriate treatment.

It familiarizes the reader with the use of an updated classification and epidemiology, guided to improve the quality of the anatocytopathologic interpretation, assumed by the World Health Organization in the common fight to save lives.

The precocious detection of precancerous states in the buccal cavity, frequently avoids the development of incipient neoplasias. In more than 75% external agents are the disease's cause; for this reason a correct prevention and diagnosis followed by timely therapeutic interventions, could suppress the factors of ulterior dissemination.

This work is required reference for deontologists, stomatologists, clinical doctors, otorhinolaryngologists and students of Odontology and Medicine.

Professor Julio Cesar Santana Garay is a Doctor of Sciences, Permanent Professor of Buccal Pathology of the Stomatology Faculty, Emeritus Professor of the University of Havana and specialist of II Grade of Maxillofacial Surgery of the National Institute of Radiology and National Coordinator of the Program for Oral Cancer Detection of Cuban Republic.

The reader is facing an enormously useful work that constitutes a solid contribution to this subject. It possesses an extensive and updated bibliography. The exhibition of its contents has been wisely distributed and it has been conveniently illustrated. For this reason the work exhibits an inner design adjusted to its nature and particularities.