of micropapillae within clear spaces separated by a fibrocollagenous or delicate
fibrovascular stroma are presented. Designated as invasive micropapillary carcinoma, the
unusual morphology of this tumor requires its distinction from metastatic ovarian serous
papillary carcinoma and extensive vascular/lymphatic invasion by either a primary or
metastatic breast carcinoma. The micropapillary pattern is retained in metastatic foci and …