Phyllodes tumor of the breast

Area of Science:

• Oncology
• Breast Surgery
• Tumor Biology

Background:

• Phyllodes tumors are rare fibroepithelial neoplasms of the breast.
• Accurate prognostic factors and therapeutic strategies are crucial for optimizing patient outcomes.

Purpose of the Study:

• To identify prognostic factors for local control and survival in phyllodes tumors.
• To evaluate the role of different therapeutic options, including surgery and radiotherapy.

Main Methods:

• Retrospective analysis of 443 women treated for phyllodes tumors between 1971 and 2003.
• Data included tumor histology (benign, borderline, malignant), surgical approach (breast-conserving surgery vs. total mastectomy), and adjuvant radiotherapy use.
• Multivariate analysis was used to determine independent prognostic factors.

Main Results:

• Local recurrence and distant metastasis rates were 19% and 3.4%, respectively.
• Adjuvant radiotherapy significantly decreased local recurrence in malignant and borderline tumors.
• Total mastectomy showed better outcomes than breast-conserving surgery for malignant and borderline phyllodes tumors.

Conclusions:

• No residual disease after treatment is a key factor for better local control.
• Benign phyllodes tumors have a good prognosis with surgery alone.
• For borderline and malignant phyllodes tumors, total mastectomy is preferred, and adjuvant radiotherapy should be considered based on histologic criteria.