Breast miofibroblastoma in postmenopausal women: case report

Abstract

The majority of the myofibroblastomas are immunoreactive for CD34, actin, CD10, and desmin. They also usually express estrogen receptor (ER) and progesterone receptor (PR), while variable expressing androgen receptor (AR). They are not immunoreactive for cytokeratins, EMA, S100, HMB-45, and CD117. Pathological definitive diagnosis always must be, because this tumor is frequently misdiagnosis like a benign tumor, metastatic tumor, sarcoma or epithelial malignant tumor.