Mucoepidermoid tumor

Mucoepidermoid tumor is a type of neoplasm that primarily affects the salivary glands. It is the most common malignant salivary gland tumor, accounting for approximately 30% of all salivary gland malignancies.

Etiology

The exact cause of mucoepidermoid tumors is unknown. However, it is believed that they may be associated with certain genetic mutations.

Pathophysiology

Mucoepidermoid tumors are characterized by a mixture of cell types, including mucous cells, squamous cells, and intermediate cells. The proportion of these cell types can vary widely, and the tumor's behavior is largely determined by this cellular composition.

Clinical Presentation

Patients with mucoepidermoid tumors often present with a painless mass in the parotid gland. Other symptoms can include facial nerve palsy, pain, and skin involvement.

Diagnosis

Diagnosis of mucoepidermoid tumors typically involves a combination of physical examination, imaging studies such as computed tomography (CT) or magnetic resonance imaging (MRI), and tissue biopsy.

Treatment

The primary treatment for mucoepidermoid tumors is surgical resection. In some cases, radiation therapy may also be used, particularly for tumors that are not completely resectable.

Prognosis

The prognosis for patients with mucoepidermoid tumors is generally good, particularly for those with low-grade tumors. However, high-grade tumors can be more aggressive and have a poorer prognosis.

See Also

• Salivary gland neoplasm
• Malignant neoplasm
• Squamous cell carcinoma

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