人在美国，飞去中国做的活检，还是。。？ 乳癌仅1.1毫米？ 给篇美国MSK癌症中心文章。

依据你描述 ，与导管“乳癌”大小 及“MRI based的活检”出血等等特征，更像是下面这个，也是常被误诊乳癌的之一。

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“What is a breast papilloma, and is it cancer?

Also called intraductal papilloma, a breast papilloma is a small, wartlike growth in the breast’s milk ducts. This benign (noncancerous) condition may cause a clear or bloody discharge from the nipple, or you may feel a small lump behind or next to the nipple. Having one papilloma does not raise your breast cancer risk, though having several of these growths has been linked to higher risk.”

https://www.mskcc.org/cancer-care/types/breast/types-breast?pn_mapping=pn_11&gclid=EAIaIQobChMIiKa3w6Sw8QIVFQaICR1ymAkHEAAYASAAEgINIvD_BwE