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Table 19 Summary of the most important pathology variants in salivary gland tumours

From: Technical guidelines for head and neck cancer IMRT on behalf of the Italian association of radiation oncology - head and neck working group

Category Variant RT
Benign mixed tumors i.e. pleomorphic adenoma Only for recognized tumour spill; transformation into malignant; recurrent (controversial)
Malignant, low grade Acinic cell carcinoma Only for incomplete resection (i.e. close to CN VII), positive or close resection margins; capsule rupture; recurrent
  Mucoepidermoid carcinoma
Malignant high grade Mucoepidermoid carcinoma Always postop RT except in adenoid cystic carcinoma and mucoepdermoid in absence of risk factors.
Malignant mixed
Adenoid cystic