Biologic Behaviour

•FSA is the 3rd most common primary bone neoplasm (5%-9%)

•FSA should be differentiated from fibroblastic OSA

•30%-40% FSA occur in the appendicular skeleton

•FSA may be endosteal (common) or parosteal

•parosteal may represent STS with extension into adjacent bone

•appendicular FSA is less malignant than oral FSA and slower to metastasize than appendicular OSA

•pathologic fracture 50%

•radiographic findings: usually lytic but occasionally can resemble OSA

•metastatic sites include heart, pericardium, skin, and other bones, but lungs are an uncommon metastatic site

•treatment: surgical resection is recommended, but role of chemotherapy is unknown

•12-month survival rate 29% with limb-sparing surgery and 66% after limb amputation

SURGICAL ONCOLOGY

SOCIETY

RESEARCH

EDUCATION

LINKS

EMPLOYMENT

IMAGE LIBRARYImages.html
● HistoryHistory.html
● What is a Surgical OncologistSurgical_Oncology_1.html
● Find a Surgical OncologistSurgical_Oncology_2.html
● Aims and ObjectivesAims.html
● MembershipMembership.html
● CommitteesCommittees.html
● NewsletterNewsletter.html
● Constitution and BylawsConstitution.html
● Research TrialsResearch_Trials.html
● Publications by MembersPublications.html
● Research OpportunitiesResearch_Opportunities.html
● Cancer InformationCancer_Information_1.html
● Conferences and MeetingsConferences.html
● Radiation FacilitiesRadiation_Facilities.html
● CE OpportunitiesCE_Opportunities.html
● Cancer InformationCancer_Information_2.html
● Current OpportunitiesEmployment_Opportunities.html
● Fellowship Training GuidelinesFellowship_Guidelines.html

FIBROSARCOMA

● Surgical Oncology JournalsJournals.html
● Surgical Oncology SocietiesSocieties.html
● Veterinary Surgery CollegesColleges.html

T0

No evidence of neoplasia

T1

Tumor confined within the medulla and cortex

Primary Tumor

T2

Tumor extends beyond the periosteum

M0

No evidence of lymph node involvement

M1

Evidence of distant metastasis with site specified

Metastasis