Abstract:Objective To investigate correlation between contrast-enhanced ultrasonography and both pathological features and immunohistochemistry in breast cancer. Methods From December 2015 to December 2018, 91 patients with single-lesion breast cancer were selected in Tangshan Maternal and Child Health Hospital. Preoperative contrast-enhanced ultrasound (enhancement level, enhancement mode, filling defect, range change, perforator vessels) were evaluated, while immunohistochemical indexes (estrogen receptor, progesterone receptor, human epidermal growth factor receptor-2) were detected. Pathological examination (tumor diameter, lymph node metastasis, histological grade) were performed after operation. Results Patients with tumor diameter > 20 mm were more likely to have hyperenhancement, filling defect and perforator vessels (P < 0.05). Patients with lymph node metastasis were more likely to have filling defects and perforating vessels (P < 0.05). Grade III patients were more likely to have filling defect (P < 0.05). Patients with negative estrogen receptor and positive human epidermal growth factor receptor-2 were more likely to have filling defect (P < 0.05). Enhancement level was negatively correlated with tumor diameter (r = -0.343, P < 0.05). Filling defect was negatively correlated with tumor diameter, histological grade and estrogen receptor (r = -0.371, -0.412, -0.286, P < 0.05). Filling defect was positively correlated with lymph node metastasis and human epidermal growth factor receptor-2 (r = 0.289, 0.527, P < 0.05). Perforator vessel was negatively correlated with tumor diameter and lymph node metastasis (r = -0.305, -0.295, P < 0.05). Conclusion Contrast-enhanced ultrasound can accurately evaluate characteristics of breast cancer, which is closely related to immunohistochemical parameters.