Pleomorphic adenoma

Pleomorphic Adenoma

Pleomorphic Adenoma is a benign neoplasm characterized by a mix of epithelial and myoepithelial cells, along with a mesenchymal component that can include mucoid, myxoid, cartilaginous, or osseous areas. It is the most common type of salivary gland tumor.

Characteristics

Pleomorphic adenomas are often encapsulated, either completely or partially. They are notable for their diverse histological appearance, hence the term "pleomorphic" (meaning "many forms").

Occurrence

This tumor type primarily occurs in:

Parotid gland
Submandibular gland
Minor salivary glands in the oral cavity
Upper respiratory tract
Nasal cavity and paranasal sinuses

Symptoms

Pleomorphic adenomas usually present as a slow-growing, painless mass. In some cases, patients may experience pain or facial palsy.

Diagnosis

Diagnosis typically involves a combination of:

Physical examination
Imaging studies such as MRI or CT scans
Biopsy to confirm the histological diagnosis

Treatment

The standard treatment for pleomorphic adenoma is surgical excision. Complete removal is necessary to minimize the risk of recurrence.

Potential Complications

Complications of pleomorphic adenoma may include:

Recurrence after excision
Rare transformation into a malignant neoplasm (carcinoma ex pleomorphic adenoma)

External Links

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