Patient Data
Age: 75 years
Gender: Female
From the case:
Malignant fibrous histiocytoma of the breast
{"current_user":null,"step_through_annotations":true,"access":{"can_edit":false,"can_download":true,"can_toggle_annotations":true,"can_feature":false,"can_pin":false},"extraPropsURL":"/studies/41316/annotated_viewer_json?iframe=true\u0026lang=us"}
Mammograms show a round, dense mass with fine spiculated margins.
Wide local excision with tumor-free margins and a sentinel node biopsy was performed.
The final histology showed a high-grade spindle cell tumor, with marked nuclear atypia and 10 mitotic figures per 10 hpf. The value of Ki-67 labeling index was 35 %.
The sentinel node was negative for metastases.
The neoplastic cells were negative for desmin, CD34, CKAE1/AE3, CK34bE12, calponin and positive for AML and vimentin.
Case Discussion
Primary malignant fibrous histiocytoma (MFH) of the female breast occurs very rarely, less than 1% of all breast malignancies
At 5-year follow-up, the patient is alive and well without evidence of disease.