TABLE 2.
Results of the Reclassification of Salivary Gland Lesions Using the Milan System for Reporting Salivary Gland Cytopathology
| Results | Histologic Diagnosis, No. | Total No. of Cases (%) [Range] | RON, % [Range] | ROM, % [Range] | MSRSGC ROM, % | ||
|---|---|---|---|---|---|---|---|
| Non‐Neoplastic | Neoplasm, Benign | Malignant | |||||
| Nondiagnostic | 79 | 173 | 39 | 291 (18.1) [4.7‐34.2] | 72.9 [51.3‐90.9] | 13.4 [0.0‐41.7] | 25.0 |
| Non‐neoplastic | 56 | 4 | 6 | 66 (4.1) [0‐7.7] | 15.2 [0.0‐62.5] | 9.1 [0.0‐50.0] | 10.0 |
| AUS | 41 | 98 | 46 | 185(11.5) [4.1‐25.2] | 77.9 [54.5‐100.0] | 24.9 [3.7‐100.0] | 20.0 |
| Neoplasm, benign | 7 | 683 | 13 | 703 (43.7) [30.2‐52.7] | 99 [95.1‐100.0] | 1.8 [0.0‐6.3] | <5.0 |
| SUMP | 8 | 89 | 57 | 154 (9.6) [3.6‐15.7] | 94.8 [80.0‐100.0] | 37.0 [18.2‐57.1] | 35.0 |
| SFM | 0 | 6 | 52 | 58 (3.6) [0‐5.7] | 100 [100.0] | 89.7 [75.0‐100.0] | 60.0 |
| Malignant | 0 | 1 | 150 | 151 (9.4) [5.6‐14.4] | 100 [100.0] | 99.3 [90.0‐100.0] | 90.0 |
| Total no. (%) | 191 (11.8) | 1054 (65.5) | 363 (22.6) | 1608 | |||
Abbreviations: AUS, atypia of undetermined significance; MSRSGC, Milan System for Reporting Salivary Gland Cytopathology; ROM, risk of malignancy; RON, risk of neoplasm; SFM, suspicious for malignancy; SUMP, salivary gland neoplasm of uncertain malignant potential.