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Polymorphous low-grade adenocarcinoma is a rare, asymptomatic, slow-growing malignant salivary gland tumor. It is most commonly found in the palate.

The name of the tumor derives from the fact that:

It affects the minor salivary glands in the area between the hard and the soft palate. Male to female ratio is 3:1, and the average age is 56 years.

PLGAs consist of a monomorphous cell population that has a varied histologic morphology.

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