Invasive micropapillary carcinoma of the breast with minimal regional lymph node metastasis regardless of the huge size: Report of a case
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We present a 38-year-old premenopausal Japanese woman with invasive micropapillary carcinoma (IMC) of the left breast with minimal lymph node metastasis despite a huge size. The patient noticed a left breast mass and a bloody nipple discharge 2 years before admission. On admission, physical examination revealed a huge, elastic hard mass with skin ulcer 12 × 12 cm in diameter occupying the entire left breast. The patient underwent modified radical mastectomy with level III lymph node dissection, and the defect was reconstructed with a vertical rectus abdominis myocutaneous flap. Histopathologically, IMC comprised about 60% of the tumor, admixed with papillotubular and mucinous carcinoma. Only one of twenty-five lymph nodes had tumor metastasis. The patient remains well 8 months postoperatively without any signs of recurrence.
Key wordsInvasive micropapillary carcinoma Lymph node
Invasive micropapillary carcinoma
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