Primary extranodal non-Hodgkin lymphoma of the oral cavity.

Lymphoma is the second most common neoplasm of the head and neck after squamous cell carcinoma. Nearly 24% to 48% of non-Hodgkin lymphoma can arise in extranodal localizations and 3% to 5% of which were primarily located in the oral cavity. Waldeyer ring is the most frequently involved site.

Primary oral malignant melanoma.

Malignant melanoma of the oral cavity is a rare neoplasm. It is well known for his poor prognosis and the need for an evidence-based treatment. Therapy is commonly based on surgical excision of the primary tumour, supplemented by adjuvant therapy.