Hemangiopericytoma of the Breast: A Case Report and a Review of the Literature

Table 1

The most important trials regarding HPC of the breast.

Author	Year of publication	Tumor location. Sex	Therapy	Immunohistochemistry	Results
Buecker et al.; [5]	2008	Left breast. Female	TRM with excision of the pectoral fascia and an axillary lymph node sampling	The tumor cells expressed CD31, CD34, CD117, CD99, and vimentin	6-month postoperative follow-up, no evidence of disease
Tang et al.; [6]	2008	Left breast. Female	TRM and an axillary lymph node sampling	Tumor was positive for CD34 and negative for vimentin, desmin, actin, and S-100	NS
Kanazawa et al.; [7]	1999	Left breast. Female	Simple mastectomy	Tumor cells were only positive for vimentin	18 months after operation, free of local recurrence or distant metastasis
Wang et al.; [8].	2011	Right breast. Male	TRM + 4 axillary lymph nodes	The tumor cells were positive for CD31, CD34, CD99, F-VIII, vimentin, and SMA	9-month postoperative follow-up, no evidence of disease
Dragoumis et al.; [9]	2013	Right breast (pectoralis major muscle). Female	Tumor excision	The tumor cells were positive for CD34 and negative for desmin, SMA, and S-100 protein	20-month postoperative follow-up, no evidence of disease

TRM: modified radical mastectomy; NS: not stated; SMA: smooth muscle actin.