All of the following are true about mucoepidermoid carcinoma except:

Mucoepidermoid carcinoma: Most common radiation induced neoplasm of parotid Most common malignant salivary gland tumor in children Types: Low grade type High grade type Well circumscribed mass having cystic mucinous material Mucin producing cells predominate Well-differentiated More Common in children TOC; Superficial or total parotidectomy Grossly infiltrative and has less tendency to cyst formation (hard tumor) Squamous cells predominate Poorly differentiated Less common TOC: Total parotidectomy +/- radical neck dissection