Polymorphous low-grade adenocarcinoma

Polymorphous low-grade adenocarcinoma (PLGA) 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.
Histology.
PLGAs consist of a monomorphous cell population that has a varied histologic morphology.
Microscopically, its histology can be confused with an adenoid cystic carcinoma and a pleomorphic adenoma.
Treatment.
PLGAs are treated with wide local surgical excision and long-term follow-up.
There is a recurrence rate of 14% (Peterson, contemporary of oral and maxillofacial surgery).