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Osteogenic sarcoma. Malignant fibrous histiocytoma subtype
W A Ballance1, G Mendelsohn, J R Carter
1Department of Pathology, Case Western Reserve University, Cleveland, Ohio.
Cancer
|August 15, 1988
Summary
Malignant fibrous histiocytoma (MFH) subtype of osteogenic sarcoma is distinct from MFH of bone. This aggressive bone cancer presents with osteoid and woven bone, often metastasizing to the lungs.
Area of Science:
- Oncology
- Pathology
- Radiology
Background:
- Malignant fibrous histiocytoma (MFH) is a recognized bone tumor.
- A distinct histopathologic subtype of osteogenic sarcoma exhibits MFH features.
Purpose of the Study:
- To describe the clinicopathologic features of the MFH subtype of osteogenic sarcoma.
- To differentiate this subtype from MFH of bone.
Main Methods:
- Case series review of six patients with MFH subtype of osteogenic sarcoma.
- Histopathologic, immunocytochemical, and radiological analysis.
- Clinical data correlation.
Main Results:
- Tumors showed a soft tissue component indistinguishable from MFH and an osseous component with neoplastic osteoid and woven bone.
- Radiologically, lesions were predominantly osteoblastic with focal osteolytic areas.
- Immunocytochemistry revealed alpha-1-antichymotrypsin positivity in malignant giant cells and osteoblasts in five cases.
- Four of six patients developed pulmonary metastases within 6-12 months post-surgery.
Conclusions:
- The MFH subtype of osteogenic sarcoma is a distinct, aggressive neoplasm.
- Accurate diagnosis requires adequate tumor sampling and correlation of clinical, radiographic, and histopathologic findings.
- Distinguishing this entity from MFH of bone is crucial for appropriate management.