| Size |
|
Maximum diameter of the tumor by ultrasound |
| Shape |
Oval, round |
Oval, spherical or round |
| |
irregular |
Not round or oval |
| Orientation |
Parallel |
Long axis of lesion parallels the skin line |
| |
Not parallel |
Long axis, not oriented along the skin line |
| Margin border |
circumscribed |
A margin that is well defined or sharp, with an abrupt transition |
| |
indistinct |
No clear demarcation between mass and its surrounding tissue |
| Margin contour |
smooth |
Smooth, even margin without any irregularity |
| |
lobulate |
Short cycle undulations impart a scalloped appearance to the margin of the mass |
| |
Angular, spiculate |
Margin is formed or characterized by sharp lines projecting from the mass |
| Post. acoustic |
Indifferent |
No shadowing or enhancement |
| |
Enhancement |
Increased posterior echo |
| |
Shadowing |
Decreased posterior echo and combined |
| Calcification |
Absent |
No punctuated extensively hyper-echoic foci |
| |
Present |
Punctuated extensively hyper-echoic foci |
| Boundary |
Abrupt interface |
No thin capsule or echoic halo |
| |
Echogenic Halo |
Blurred, irregular hyperechoic rim around the lesion |
| Echogenicity |
Hyper-, isoechoic |
Hyper- or isoechogenicity compared to fat, e.g., fibroglandular tissue |
| |
Complex, hypoechoic |
Hypoechoic compared to fat tissue |
| Adler |
0 |
Vascularity not present |
| |
I |
1-2 spot vessels, caliber shorter than 1 mm |
| |
II |
1-2 vessels, longer than the radius of the tumor |
| |
III |
More than 4 vessels |
| BI-RADS |
I |
No lesion found |
| |
II |
Benign finding |
| |
III |
Probably benign finding |
| |
IV |
Suspicious abnormality |
| |
V |
Highly suggestive of malignancy |
