A case of breast cancer with osteoclast-like giant cells developed local recurrence due to needle tract seeding

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A 40-year-old woman was seen at the hospital in October 2008 because she was recommended to receive close exploration as a result of a mass-screening examination for breast cancer. A tumor 1.5 cm in diameter was palpable in the left breast. Following core needle biopsy (CNB), invasive ductal carcinoma of the breast containing osteoclast-like giant cells was diagnosed. On November 12, 2008, Bp + SN were performed when the surgical margins and sentinel lymph nodes were negative. As the patient had to be transferred to another hospital on the eighth postoperative day for treatment of autoimmune hepatitis, we could not give her adjuvant therapy. On March 3, 2009 when she had been staying at another hospital, A 5 mm-sized tumor in the subcutaneous area with subcutaneous hemorrhage in the left breast was detected, and she was referred to our hospital. Following fine needle aspiration cytology, local recurrence was diagnosed and mastectomy for the remnant left breast was performed on March 26.<BR>Malignant tumors of the breast with osteoclast-like giant cells are extremely rare and represent about 0.5% to 1.2% of all breast cancers. This paper deals with a case of breast cancer with osteoclast-like giant cells developed local recurrence which might be caused by needle tract seeding after breast-conserving surgery.
日本臨床外科学会の論文