Patient with Fibroadenoma on Biopsy, Found to have Phyllodes on Final Pathology: A Case Report

Abstract

Distinguishing between fibroadenomas and phyllodes tumors is a challenge in breast surgery, despite advances in both radiology and pathology. In this case report, we analyze a patient presenting with a breast mass with multiple core needle biopsy results consistent with fibroadenoma, who underwent enucleation and was found to have phyllodes tumor on final pathology, thereby requiring surgical re-excision. This case report highlights the importance of patient clinical presentation in differentiating fibroadenomas and phyllodes tumors and explores how to achieve appropriate margins upon surgical re-excision after prior enucleation of phyllodes tumor via ultrasound localization of a seroma.