Abstract:
Objective This study aims to evaluate the sonographic features of phyllodes tumors of the breast (PTBs) and the correlation between sonographic and pathologic findings to improve the understanding of the disease.
Methods Sonographic findings of 85 PTBs from 83 patients were reviewed. The sonographic findings included the results of two-dimensional ultrasound and color Doppler flow imaging, elastographic features, and pathologic data.
Results Of the 85 lesions, 33 were the benign tumors, 28 were borderline, and 24 were malignant according to the pathologic diagnosis. Tumor morphology revealed that most masses were lobulated, with a clear-cut boundary, smooth verge, and inhomogeneous internal echo. Clear boundary was more common in the benign phyllodes tumors (χ2=12.721, P=0.002), and a cystic echo-free area was more commonly observed in these malignant tumors (χ2=9.677, P=0.046). Level Ⅱ and Ⅲ signals of the blood flow were observed in 75.3% of PTB cases. Of all lesions, only 26 were subjected to elasticity imaging, and the elastographic scores ranged from 2 to 3 in 88.5% of the cases (23/26).
Conclusion Conventional ultrasound and elastographic findings on PTBs exhibited definite characteristics. The border and cystic areas in the tumors can be used to differentiate between benign and malignant PTBs.
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