Malignant Minor Salivary Gland Tumors in Quito, Ecuador. Clinical Aspects and Prognostic Factors

Salivary gland tumors include a group of uncommon heterogeneous neoplasms that represent 3% to 6% of all head and neck malignancies [1,2]. Approximately 70% of these tumors are located in the parotid gland and most of them are benign. However, gland tumors may also originate in the submandibular, sublingual and minor salivary glands [3,4].