Objective  To explore the correlations between the pathological features of ductal carcinoma in situ (DCIS) of the breast and mammography as well as examination of contrast-enhanced ultrasound.

  Methods  Eighty-three patients with DCIS were selected as research objects, and the correlations between pathological features of DCIS and two methods were detected by mammography and contrast-enhanced ultrasound were explored.

  Results  X-ray mammography showed that among the 83 patients with DCIS, there were 60 cases (72.29%) of malignant calcification and 27 cases (32.53%) of soft tissue mass. The X-ray mammography showed significant positive correlations with malignant calcification and soft tissue mass in DCIS patients (P < 0.05). There were significant differences in contrast-enhanced ultrasound score among different differentiation types and pathological features of lymph node metastasis (P < 0.05); there was a significant negative correlation between contrast-enhanced ultrasound score and differentiation type of DCIS patients (P < 0.05), and a significant positive correlation between contrast-enhanced ultrasound score and lymph node metastasis (P < 0.05).

  Conclusion  The pathological features of DCIS are related to malignant calcification, soft tissue mass shadow, different differentiation types of patients and lymph node metastasis. X-ray mammography and contrast-enhanced ultrasound in combination in clinical diagnosis of DCIS can improve the diagnostic accuracy.