In carcinoma of the lips, dissemination and distant metastasis is rare. Metastasis through lymphatics or blood is very rare in cancers of the oral cavity because most cases are diagnosed early.
Diagnosis of most of the oral cancers can be confirmed by excisional biopsy, followed by surgical excision of the tumors. Surgical removal can cause disfigurement and difficulties in other physiological functions of the oral cavity such as mastication, swallowing, and articulation of speech. Thus, surgeries are combined with chemotherapy and radiotherapies to preserve normal functions. Chemoprophylaxis can help prevent the conversion of premalignant conditions into malignant conditions.