“A hypoechoic mass is seen behind the right nipple, with irregular shape, unclear border, uneven internal echogenicity, and blood flow signals are seen in and around the cDFI nodule in the form of dots” is a high probability of malignant nodule. There is a significant difference between benign and malignant breast tumors on ultrasonography. Malignant signs generally include irregular shape of the mass, unclear margins, aspect ratio ≥0.7, low and heterogeneous internal echoes, attenuated posterior echoes, blood flow signals inside and outside the mass, and hard elasticity coefficient. A hyperechoic mass is seen behind the right nipple, with irregular morphology, unclear border, uneven internal echoes, and blood flow signals in and around the cDFI nodule, which is point-like and consistent with malignant characteristics. However, ultrasonography can only be used as a clinical reference, and puncture biopsy or surgical excisional biopsy is needed to make a definitive diagnosis, and the final pathological result is the gold standard for the diagnosis. It is recommended to consult a regular hospital in a timely manner, follow the doctor’s instructions and cooperate with the treatment, do not blindly treat the disease, so as not to delay the condition.