9182/3 Fibroblastic osteosarcoma


Synonyms

Osteofibrosarcoma

Definitions

Bone
ICD-O-3 topography code: C40-C41
ICD10: C40-C41
           

Fibroblastic osteosarcoma is a subtype of conventional osteosarcoma characterized by the presence of spindle cells and only minimal amounts of osseous matrix. The overall histological appearance is similar to fibrosarcoma or malignant fibrous histiocytoma. However, its loose definition (i.e., minimal matrix) makes fibroblastic osteosarcoma the default classification. Approximately 25% of conventional osteosarcomas are fibroblastic 1
 
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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