The elastic image performance was graded as V (0 to 4 points) according to the different colors (different relative hardness) displayed in the lesion area: 0 points, the lesion area was dominated by cystic components and showed red-blue or blue-green-red interactions. 1 point, the lesion is uniformly green with the surrounding tissue. 2 points, the lesion area is predominantly green with a blue periphery. 3 points, the lesion area shows a haphazard blue-green distribution. 4 points, the lesion area is completely covered by blue or the surrounding area is blue. The elasticity score of 3 was used as the diagnostic cut-off point, and ≥3 was considered malignant and <3 was considered benign.