Malignant Phyllodes Tumor of the Right Breast with Sacral Bone Metastasis- A Clinical Case from our Practice with A Literature Review

Phyllodes breast neoplasms are rarely diagnosed biphasic tumors that are benign, borderline, or malignant. We present a rare malignant phyllodes tumor in a 62-year-old woman with bone metastasis in the sacrum, presented 4 months after radical breast tumor surgery. Because of a severe pain syndrome, we performed intensity modulated radiotherapy with a high single dose of 8 Gy in two fractions, once a week. In this article we emphasize the difficult histopathological diagnosis, as well as the differential diagnosis, requiring immunohistochemistry of the two tumor components / epithelial and stromal/, as well as the clinical and pathological characteristics determining the malignant nature of the disease. In the presence of a soft tissue component of the bone metastasis, a biopsy with immunohistochemistry is required to prove the histopathological diagnosis of the distant metastasis. Distant metastases require complex treatment, including chemotherapy and palliative radiation therapy