Solitary Fibrous Tumor That Developed in the Thigh

Ji Young Seo, Eun Sin Lee, Hyucksang Lee, Yeo Goo Chang, Woo Young Lee, Hye-kyung Lee, Seong Wo Hong
2010 Journal of the Korean Surgical Society  
A solitary fibrous tumor (STF) is a relatively unusual neoplasm first described as a distinctive tumor arising from pleura. Some reports have shown that STF also affect extrathoracic regions. A 70-year-old woman was referred to our hospital for surgical treatment of an incidentally discovered thigh mass. We performed complete removal of the tumor. It was a soft tissue tumor with muscle indentation but without invasion to the surrounding muscles. The resected specimen was 7.0×6.3×5.2 cm.
more » ... ically, the tumor was composed of a haphazard proliferation of spindle cells and epitheloid cells with hypercellularity and high mitotic activity. Immunohistochemistry showed positive immunoreactivity for CD34, CD99, bcl-2 protein, CD117, vimentin, smooth muscle actin and epithelial membrane antigen. We report, herein, on a rare case of malignant SFT in the thigh region along with a review of the literature. (J Korean Surg Soc 2010;79:508-512)
doi:10.4174/jkss.2010.79.6.508 fatcat:eqzfil6jlndrrab5prmh6pvjt4