Objective:

To investigate the ultrasonographic features and corresponding histopathological features of mammary f ibromatosis

and to analyze the causes of misdiagnosis in order to improve the diagnostic level.

Methods:

Clinicopathological data and ultrasonographic imaging features of 17 patients with pathologically conf irmed mammary f ibromatosis (13 from the breast parenchyma and 4 from the chest wall) were retrospectively analyzed.

Results:

Nineteen lesions originated from breast parenchyma

and conventional ultrasound showed hypoechoic with irregular edges

while contrast-enhanced ultrasonography showed

mainly peripheral enhancement. Elastography was performed in 11 lesions

with 5 cases scored 3 points and 6 scored 4 points. Four lesions originated from the chest wall were mostly regular in shape on conventional ultrasound and showed high enhancement with clear boundaries on contrast-enhanced ultrasonography.

Conclusion:

Mammary f ibromatosis is easily misdiagnosed as malignant tumor on imaging

and its ultrasonic manifestations are closely related to pathological features. Multimodal comprehensive evaluation is of certain value in judging the source of lesions and differential diagnosis

and combining with clinical features is helpful to further reduce the misdiagnosis rate.