Table 2:
Risk of malignancy for various morphologic categories.
| Study | Morphologic category | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Warthin tumor | PA | Monomorphic basaloid | Pleomorphic basaloid | Monomorphic oncocytoid | Oncoytoid Gran/Vac | Pleomorphic oncocytoid | |||||
| Fibrillary | Hyaline | Mixed/Other | Cystic | Mucinous | Other | ||||||
| Griffith et al. 2015 | 0 (0/29) | 4.1% (2/49) | 15.4% (2/13) | 42.9% (3/7) | 60.0% (6/10) | 100.0% (4/4) | 0 (0/11) | 80.0% (8/10) | 21.1% (4/19) | 84.6% (11/13) | 100.0% (21/21) |
| Griffith et al. 2017 | 0 (0/16) | 14.3% (3/21) | 14.3% (2/14) | 83.3% (5/6) | 60.0% (6/10) | 75.0% (3/4) | 25% (1/4) | 80.0% (24/30) | 40.0% (2/5) | 100.0% (17/17) | 100.0% (17/17) |
| Current study | 0 (0/12) | 0 (0/58) | 50% (3/6) | 71.4% (5/7) | 47.4% (9/19) | 100.0% (1/1) | 0 (0/1) | 92.3% (12/13) | 33.3% (5/15) | 100.0% (10/10) | 88.9% (8/9) |
| Total | 0 (0/57) | 3.9% (5/128) | 21.2% (7/33) | 65.0% (13/20) | 53.8% (21/39) | 88.9% (8/9) | 6.3% (1/16) | 83.0% (44/53) | 28.2% (11/39) | 95.0% (38/40) | 97.8% (46/47) |
PA=pleomorphic adenoma