Pharyngeal Cancer
BACKGROUND
Anatomy
The pharynx is the part of the upper aerodigestive tract that lies behind the oral cavity and nasal cavity and above the food pipe and windpipe (esophagus and trachea). The pharynx is divided into three parts. The nasopharynx lies behind the nose. The oropharynx lies behind the oral cavity and includes the tonsils, base of the tongue, and posterior wall. The hypopharynx is below the oropharynx and lies above and behind the voice box (larynx).
Epidemiology
Cancer of the pharynx is, in most cases, caused by tobacco products. Heavy alcohol use is also a contributing factor in many patients. In fact pharyngeal cancer is very rare in persons who have never used tobacco products or alcohol on a daily basis.