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WHO Classification of Tumours
Solitary fibrous tumor
Kidney


Definition

A relatively rare, spindle-cell, fibroblastic tumour that typically shows a prominent haemangiopericytoma-like vascular pattern. It is histopathologically characterized by the presence of round to spindle-shaped cells, hyalinized stroma formation, thin-walled branching blood vessels, and thin bands of collagen
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Fletcher CDM, Unni KK, Mertens F (Eds.)
World Health Organization Classification of Tumours. Pathology and Genetics of Tumours of Soft Tissue and Bone.
3rd Edition
IARC Press: Lyon 2002



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Solitary fibrous tumours of the kidney arise in the renal parenchyma and present as large, well-circumscribed masses. They may clinically be confused with renal cell carcinoma or a sarcoma

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Eble JE, Sauter G, Epstein JI, Sesterhenn IA (Eds.)
World Health Organization Classification of Tumours. Pathology and Genetics of Tumours of the Urinary System and Male Genital Organs.
3rd Edition
IARC Press: Lyon 2004



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