Abstract
Oral cancers in India, unlike in the West are the most common cancers encountered, be it a primary or a tertiary referral practice. This makes the study and management of these cancers an important issue especially for the otolaryngologist. It is well known that the most common variant of oral cancers is the squamous cell carcinoma. Also the etiology is well established; with tobacco use in both smoking and smokeless forms, alcohol, betel nut and recently the Human Papilloma virus infection being implicated. Certain conditions which definitely increase the probability of getting oral cancers are known and this study aims in revisiting these aspects of pre-malignancy. The progression from a pre-cancerous lesion/condition to frank cancer is well established across many studies and many specialties. Also timely recognizing these pre-cancerous conditions and administration of proper treatment will greatly help in reducing the morbidity and mortality from subsequent much advanced and dangerous oral cancer. Keeping these facts in mind this study was planned to study the established pre-cancerous lesions which are known to progress to oral cancers.