Smoking and alcohol abuse are the major risk factors. Viral causes have recently been taken under consideration as one of the risk factors. Viruses such as Epstein-Barr virus (EBV) (majorly involved in causing nasopharyngeal<unk>  and human papilloma virus are included in this category. Chewing of betel nut (Areca catechu) quid has been directly associated to cause oral cancers. It has also been stated under the FDA poisonous plant data base by the U.S Food and Drug Administration An unbalanced diet, deficit in fruits and vegetables has shown to increase the risk of cancer.
Tonsil carcinoma
Laryngeal cyst
Laryngeal papillomatosis
Laryngeal cancer
Peritonsillar abscess
Oropharyngeal cancer
Nasopharyngeal cyst
Adenoiditis