A 61-year-old woman with a breast tumor detected by mammography examination was admitted to our hospital. Ultrasonography showed a 15.5×7.2mm sized irregular mass at the left BD area. Vacuum-assisted biopsy did not reveal any malignant cells. After 3 months, ultrasonography reexamination showed that the irregular mass had increased to 24.2×16.5mm in size, and it had spread to multiple axillary lymph nodes. The patient was diagnosed with breast cancer by core needle biopsy of the axillary lymph node. Total mastectomy with axillary lymph node dissection was performed. The pathological diagnosis was solid-tubular carcinoma with infarcted necrosis. The number of metastatic axillary lymph nodes was confirmed to be 23 in total. This case was considered very rare and important because there have been very few reports of breast cancer with infarcted necrosis.
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