Malignant epithelial tumor of salivary glands

A rare neoplastic disease characterized by the presence of a tumor located in the parotid, sublingual, submandibular and/or minor salivary glands, which presents with a wide spectrum of clinical features depending on the location, size and type of salivary gland involved, ranging from clinically asymptomatic, slow-growing, painless mass(es), that may or may not be fixed to underlying skin or muscles, to rapidly growing mass(es) associated with pain, facial weakness/nerve palsy, otorrhoea, dysphagia, palatal/parapharyngeal fullness, nasal obstruction/bleeding, voice hoarseness/change, dyspnea, trismus, palate bone erosion, telangiectasia, mucosal/skin ulceration and/or cervical adenopathy.