Discussion of Phyllodes tumor
- Phyllodes tumor was orginally termed cystosarcoma phyllodes because of its leaflike pattern of growth.
- Phyllodes tumor most commonly manifests as a rapidly growing mass in women 30–50 years of age and can be quite large at initial presentation.
- At histologic analysis, the tumor resembles a giant fibroadenoma with both epithelial and stromal components.
- Phyllodes tumors can be benign or malignant.
- Treatment is surgical excision. Both benign and malignant phyllodes tumors have a tendency to recur if not widely excised.
- Approximately 10% of all phyllodes tumors act as true sarcomas with metastases via hematogenous spread.
 Imaging Findings for Phyllodes tumor
- At mammography, phyllodes tumor manifests as a large, well-circumscribed oval or lobulated mass that may have a radiolucent halo. Coarse, plaquelike calcifications are rarely seen.
- At US, an inhomogeneous, solid-appearing mass is the most common manifestation. However, a solid mass containing cystic spaces and demonstrating posterior acoustic enhancement strongly suggests the diagnosis of phyllodes tumor.
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 References for Phyllodes tumor
- Jay M. Feder, Ellen Shaw de Paredes, Jacquelyn P. Hogge, and Jennifer J. Wilken. Unusual Breast Lesions: Radiologic-Pathologic Correlation. RadioGraphics 1999 19: 11-26.