A Multidisciplinary Perspective on Breast Phyllodes Tumors: A Literature Review

Phyllodes tumors, also known as cystosarcoma phyllodes, represent a rare and complex category of fibroepithelial neoplasms that primarily affect the breast. These tumors are characterized by their unique histological architecture, which resembles leaf-like structures, as suggested by the etymology of the term "phyllodes," derived from the Greek word "phyllodes," meaning "leaf-like". The World Health Organization (WHO) has classified these tumors into three distinct categories-benign, borderline, and malignant-based on various histopathological criteria, including cellular atypia, mitotic activity, and stromal overgrowth. With a peak incidence occurring between the ages of 40 and 52, these tumors primarily affect women and constitute 0.3% to 1% of all breast tumors. Imaging modalities currently employed (mammography, ultrasound, and MRI) play a crucial role in the initial assessment of breast masses. Histopathological characteristics, such as stromal cellularity and mitotic activity, and immunohistochemical markers, like Ki-67 and p53, are important in the diagnosis, categorization, treatment plans, and prognosis of breast phyllodes tumors. Surgical intervention, with the goal of achieving complete excision of the tumor along with adequate margins, is the primary treatment option. Adjuvant therapies, such as radiotherapy, may be considered but are still debatable. Understanding the nuances of these tumors is crucial for healthcare professionals, as they present unique challenges in both diagnosis and treatment.