Related Experiment Videos
Malignancies in fibrous dysplasia
P Ruggieri1, F H Sim, J R Bond
1Department of Orthopedics, Mayo Clinic, Rochester, MN 55905.
Cancer
|March 1, 1994
Summary
Malignant transformation of fibrous dysplasia into sarcoma is rare, with osteosarcoma being the most common type. While radiation therapy may play a role, sarcomas can develop with or without prior radiation exposure.
Area of Science:
- Orthopedic Oncology
- Bone Pathology
Background:
- Malignancies arising in fibrous dysplasia are infrequent, with limited case reports.
- The association between radiation therapy and sarcoma development in fibrous dysplasia remains debated.
Purpose of the Study:
- To investigate the incidence and characteristics of sarcomas arising in fibrous dysplasia.
- To analyze the role of radiation therapy in the development of these rare malignancies.
Main Methods:
- A retrospective review of Mayo Clinic and consultation cases of fibrous dysplasia was conducted.
- Histologic diagnoses were analyzed to identify cases of sarcoma.
Main Results:
- Out of 1122 fibrous dysplasia cases, 28 sarcomas were identified.
- Osteosarcoma was the most frequent histotype (19 cases), followed by fibrosarcoma (5 cases).
- Nearly half of the patients (13/28) had received prior radiation therapy; sarcomas occurred in craniofacial bones and proximal femur most often.
Conclusions:
- Sarcomas in fibrous dysplasia have a poor prognosis.
- These sarcomas can arise independently of radiation therapy.
- Early detection and appropriate treatment are crucial for potentially improving outcomes.