Oral Oncology

Oral cancer is a type of head and neck cancer and is any cancerous tissue growth located in the oral cavity.It may arise as primary lesion originating in any of the tissues in the mouth, by metastasis from a distant site of origin, or by extension  from a neighbouring anatomic structures, such as nasal cavity.Alternatively oral cancers may originate in any tissues of the mouth and may be of varied histologic types:teratoma, adenocarcinoma derived from a major or minor salivary gland,lymphoma from tonsillar or other lymphoid tissue or melanoma from pigment producing cells of the oral mucosa.There are several types of oral cancer , but around  90% of the squamous cell carcinomas, originating in the tissues that line the mouth and the lips.Oral or mouth cancer most commonly involves the tongue.It may also occur on the floor of the mouth, cheek lining, gingiva, lips, palate.Most oral cancers look very similar under the microscope and are called squamous cell carcinoma ,but less comonly other type of cancers like Kaposi's sarcoma also do occur.