A Rare Solitary Fibrous Tumour of Kidney

• Main Authors: Tilak Bahadur Pathak, Umesh Nepal
• Format: Article
• Language: English
• Published: Nepal Medical Association 2013-06-01
• Series: Journal of Nepal Medical Association
• Online Access: http://jnma.com.np/jnma/index.php/jnma/article/view/485

A solitary fibrous tumour (SFT) is an unusual spindle cell neoplasm. It frequently arises from the serosal surface of pleural cavity but has recently been described in diverse extrapleural sites. Urogenital localization is rare and only 36 cases of SFTs of the kidney have been described on published report. We report a case of a large SFT clinically and radiologically thought to be renal cell carcinoma arising in the kidney of a 30- year-old female. The radical nephrectomy was performed. The tumour was a well- circumscribed, solid mass attached to the renal pelvis without necrosis and haemorrhage. Histopathologically, a spindle cell neoplasia with alternating hypo and hypercellular areas, storiform, fascicular and hemangipericytoma- like growth pattern and less cellular dense collagen deposits were observed. Immunohistochemical studies revealed reactivity for CD34, CD99 and Bcl-2 protein.