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Objective Invasive micropapillary carcinoma(IMPC),first described in breast cancer tissues by Siriaunkgul and Tavassoliis in 1993,is now proposed as a special histologic subtype by WHO Classification of Tumours of the Breast in 2003.IMPC tumor cells are adhered to micropapillary or morulelike structure absence of fibrovascular cores and lying within empty stromal spaces in morphology.