Table 3.
Sonographic findings of parotid masses
|
Pleomorphic
Adenoma |
Intraductal papilloma |
Myoepithel-
ioma |
Metastatic
SCC |
Muc.
Car. |
Metastatic
BCC |
Lymphoma | |
|---|---|---|---|---|---|---|---|
| Number | 19 | 1 | 1 | 2 | 2 | 1 | 2 |
| Shape: | |||||||
| Lobulated | 18 | 1 | 1 | 1 | 1 | ||
| Oval | 1 | 1 | 1 | 1 | 1 | ||
| Eccentric | 1 | ||||||
| Distribution: | |||||||
| Focal | 19 | 1 | 1 | 2 | 2 | 1 | 2 |
| Dispersed | |||||||
| Definition of border: | |||||||
| Grade 0 | 16 | 1 | 1 | 1 | 2 | ||
| Grade 1 | 1 | 1 | |||||
| Grade 2 | 2 | 1 | 1 | ||||
| Grade 3 | 1 | ||||||
| Echogenicity: | |||||||
| Anechoic | |||||||
| Isoechoic | |||||||
| Hypoechoic | 8 | 1 | 1 | 1 | 1 | ||
| Hyperechoic | 2 | ||||||
| Mixed | 9 | 1 | 1 | 1 | 1 | 1 | |
| Homogeneity: | |||||||
| Grade 0 | 4 | 1 | |||||
| Grade 1 | 7 | 1 | 1 | 1 | |||
| Grade 2 | 8 | 1 | 2 | 1 | 1 | ||
| Grade 3 | |||||||
|
Internal
Composition: |
|||||||
| Solid | 17 | 1 | 2 | 1 | 2 | ||
| Cystic | 2 | 1 | 1 | 1 | |||
| Calcifications | 4 | 1 | |||||
| Septations | 1 | ||||||
| Acoustic shad- owing/enhancement: | |||||||
| Absent | 1 | ||||||
| Enhancement | 18 | 1 | 1 | 2 | 2 | 1 | 1 |
| Shadowing | 1 | ||||||
| Mixed | |||||||
| Vascularity: | |||||||
| Hypovascular | 8 | 1 | 1 | 1 | |||
| Hypervascular | 11 | 1 | 1 | 1 | 2 |