A CASE OF BREAST PSEUDOANGIOMATOUS STROMAL HYPERPLASIA

Abstract

We report a rare case of pseudoangiomatous stromal hyperplasia (PASH) of the breast, diagnosed as breast fibroadenoma preoperatively, in a 28-year-old woman. The patient seen at our hospital because of a right breast tumor had a well movable tumor 30×25mm in diameter in the A area of the right breast on palpation. Results of ultrasonography and aspiration biopsy cytology suggested fibroadenoma. We excised the tumor under local anesthesia. The tumor dimensions were 35×25×20mm. Vimentin, alpha-smooth muscle actin, desmin, and CD34 were positive in the stromal cells on immunohistochemical studies. Consequently, the histopathological diagnosis of the lesion was PASH of the breast. Most patients have favorable clinical courses after the excision.