Table 2 Conventional ultrasound characters of three types of parotid gland benign tumors
From: The diagnostic value of Superb Microvascular Imaging in identifying benign tumors of parotid gland
PA | BCA | WT | P value | |
|---|---|---|---|---|
Size (Maximum diameter, cm) | 2.71 ± 1.15 | 2.22 ± 0.79 | 2.85 ± 0.81 | 0.07 |
Shape | ||||
Regular | 81 | 14 | 55 | 0.07 |
Irregular | 67 | 4 | 28 | |
Boundary | ||||
Well-defined | 134 | 16 | 77 | 0.797 |
Ill-defined | 14 | 2 | 6 | |
Internal echogenicity | ||||
homogeneous | 65 | 11 | 25 | 0.02 |
Inhomogeneous | 83 | 7 | 58 | |
Cystic area | ||||
Yes | 131 | 15 | 63 | 0.09 |
No | 17 | 3 | 20 | |