A solitary fibrous tumor (SFT) is a rare mesenchymal neoplasm that was first documented in pleura, but ubiquitous in nature, involving extrapleural sites such as the upper respiratory tract, mediastinum, head and neck. To date, about 21 cases of SFT of the breast have been reported. Herein, we presented a 60-year-old Korean female with a palpable mass in the left breast. Ultrasonography with near-oval shape, and well-circumscribed margins suggested a benign lesion, so complete resection was performed. With immunohistochemical staining, we could obtain a definitive diagnosis. Since some SFTs have unpredictable clinical course, long-term follow-up is needed for all patients.

INTRODUCTION
CASE REPORT
    Clinical history and radiologic finding
    Pathology and immunochemistry
DISCUSSION
REFERENCES

• Seonguk Jang(Departments of Surgery Chosun University Hospital, Chosun University School of Medicine)
• Su Yeon Jung(Departments of Surgery Chosun University Hospital, Chosun University School of Medicine)
• YooSeok Kim(Departments of Surgery Chosun University Hospital, Chosun University School of Medicine)
• Ran Hong(Departments of Pathology, Chosun University Hospital, Chosun University School of Medicine)
• Kweoncheon Kim(Departments of Surgery Chosun University Hospital, Chosun University School of Medicine) Corresponding author