# Surgical resection is mainstay of treatment, whenever possible. If tumor is completely removed, post-operative radiation therapy is typically not needed since<unk>  is considered a low-grade histology. Post-operative radiation therapy for<unk>  is used if: ## margins are positive ##incomplete resection ##tumor invades beyond gland ##positive lymph nodes # Neutron beam radiation # Conventional radiation # Chemotherapy
Acinic cell carcinoma
Acinar adenocarcinoma
Ceruminous adenocarcinoma
Squamous cell papilloma
Papillomatosis
Verrucous carcinoma
Anaplastic carcinoma
Adenocarcinoma