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Table 2 Histopathological grading for each histologic subtype of parotid cancer

From: Outcome analysis of 215 patients with parotid gland tumors: a retrospective cohort analysis

Histology Grade I (%) Grade II (%) Grade III (%)
Acinic Cell Carcinoma 53 (87) 2 (3) 6 (10)
Adenocarcinoma NOS 1 (5) 3 (16) 15 (79)
Adenoid Cystic Carcinoma 6 (35) 4 (24) 7 (41)
Basal Cell Adenocarcinoma 4 (80) 0 1 (20)
Carcinoma-ex Pleomorphic Adenoma 4 (22) 1 (6) 13 (72)
Mucoepidermoid carcinoma 26 (38) 24 (35) 18 (26)
Salivary duct Carcinoma 0 0 19 (100)