Immediate Breast Reconstruction in an 11-year-old Girl with a Large Malignant Phyllodes Tumor

Phyllodes tumors are rare fibroepithelial breast tumors representing less than 1% of all breast malignancies, with an extremely uncommon presence in the pediatric population.¹ Although prognosis is favorable following excision given their indolent course, they often grow rapidly and frequently recur. As such, they can present unique oncologic and reconstructive challenges. Herein we present a case of a malignant phyllodes tumor in an 11-year-old girl treated with total skin-sparing mastectomy and adjustable saline implant, and explore the reconstructive challenges of this unique case.