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乳腺浸润性微乳头状癌(IMPC)约占所有乳腺浸润性癌的1%～6%。作为一种侵袭性肿瘤,即使肿瘤内微乳头(MP)分化非常局灶,也时常伴有淋巴管侵犯和淋巴结转移。IMPC典型的组织学特征是肿瘤细胞排列成实性簇状或大小相近的管状结构,被周围的纤维分隔成透明间隙。
Invasive breast papilloma (IMPC) accounts for about 1% to 6% of all invasive breast cancer. As an aggressive tumor, lymphatic invasion and lymph node metastasis are often associated with very localized micro-papillary (MP) lesions in the tumor. The typical histological features of IMPC are that the tumor cells are arranged in the form of solid clusters or similar tubular structures separated by the surrounding fibers into transparent gaps.