Table 4.

Diagnostic Considerations for the ‘SGT Undetermined’ Cases

Pleomorphic adenoma (2 cases)
Basal cell adenoma
Pleomorphic adenoma, polymorphous adenocarcinoma (2 cases)
Pleomorphic adenoma, low grade adenocarcinoma (no diagnostic and/or actionable fusion gene(s) identified)
Adenoid cystic carcinoma and benign salivary gland tumor mimics
Myoepithelioma/pleomorphic adenoma, polymorphous adenocarcinoma, less likely adenoid cystic carcinoma
Epithelial-myoepithelial carcinoma, adenoid cystic carcinoma, adenocarcinoma NOS, and cellular pleomorphic adenoma
Mucoepidermoid carcinoma, low grade (3 cases)
Polymorphous adenocarcinoma, mucoepidermoid carcinoma
Polymorphous adenocarcinoma, adenoid cystic carcinoma (2 cases)
Myoepithelial tumor, possibility of low grade malignancy cannot be excluded
Basaloid salivary gland neoplasms,basal cell adenoma, polymorphous adenocarcinoma
Carcinoma, likely salivary gland origin,clear cell carcinoma of salivary gland
Adenocarcinoma, likely of salivary gland origin, low grade