Fig. 1From: Sonographic and pathological features of metaplastic squamous cell carcinoma of the breast: a case seriesAdenosquamous carcinoma of MSCC. (Proportion of squamous cell carcinoma and invasive ductal carcinoma were 70% and 30%, respectively). A Two-dimensional ultrasonography (US) revealed a mixed echoic mass with an irregular shape (small cystic areas, and posterior enhancement. B Color Doppler ultrasound showed increased color flow signals in the solid part of the mass. C Spectral Doppler ultrasound showed a high resistive index in the feeding artery. D Histopathological examination revealed squamous epithelial differentiation and keratinization in the center of the tumor (hematoxylin–eosin, × 200)Back to article page