Phyllodes tumors of the breast

Area of Science:

• Oncology
• Surgical Pathology

Background:

• Phyllodes tumors are rare fibroepithelial breast neoplasms.
• Formerly termed cystosarcoma phyllodes, the current designation emphasizes variable malignancy potential.
• Distinguishing phyllodes tumors from fibroadenomas is critical for appropriate management.

Purpose of the Study:

• To outline the diagnostic and therapeutic considerations for phyllodes tumors of the breast.
• To emphasize the importance of complete surgical excision and margin status.

Main Methods:

• Review of the clinical and pathological features of phyllodes tumors.
• Discussion of diagnostic criteria and treatment strategies.

Main Results:

• Phyllodes tumors, even benign-appearing ones, have a propensity for local recurrence, necessitating complete excision with free margins.
• Wide surgical excision is the primary treatment modality.
• Mastectomy is indicated only when free margins cannot be obtained otherwise.
• Axillary lymph node involvement is rare and does not warrant axillary dissection.
• The efficacy of adjuvant radiation or chemotherapy for high-grade phyllodes tumors is not established.

Conclusions:

• Complete surgical excision with clear margins is essential for managing phyllodes tumors.
• Adjuvant therapies like radiation and chemotherapy lack established roles due to insufficient evidence.