Table 2.

The Osaka Medical College (OMC) categorical system for reporting salivary gland cytopathology categories

1-1 Inadequate

1-2 Cyst contents

2 Non-neoplastic

3 Atypia of undetermined significance (AUS)

4-1 Benign tumor (histology confirmed)

4-2 Benign tumor (histology unconfirmed)

5 Uncertain malignant potential (SUMP)

6-1 Suspicious for malignancy

6-2 Malignant (grade/histology unconfirmed)

6-3 Malignant (grade confirmed)

6-4 Malignant (grade/histology confirmed)