Hormone Receptor-Positive Encapsulated Papillary Carcinoma of the Breast With High-Grade Cytological Features: A Case Report With Invasive Heterogeneity.

CASE REPORT We describe the case of a 40-year-old woman who presented with a palpable lump in her right breast.

Initial ultrasonography revealed a well-circumscribed 23-mm mass interpreted as benign, but follow-up imaging after 3 months showed rapid enlargement to 30 mm.

Core needle biopsy confirmed invasive breast carcinoma of no special type.

The patient underwent a skin-sparing mastectomy with immediate reconstruction.