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Spontaneous chondrosarcoma in Wistar rat: a case report.
Seema Balani1, Mohmad Sadik Mulla1, Vijayakumar Subramanian1
1Vimta Labs Ltd., Vimta Life Sciences Facility, Plot No. 5, M N Park, Genome Valley, Shameerpet, Hyderabad 500101, Telangana, India.
Journal of Toxicologic Pathology
|February 25, 2021
Summary
A rare spontaneous chondrosarcoma was found in a Wistar rat's femur. This malignant cartilaginous neoplasm showed aggressive infiltrative growth, highlighting spontaneous tumor development in research animals.
Area of Science:
- Veterinary Pathology
- Oncology
- Rats as research models
Background:
- Chondrosarcomas in rats can arise spontaneously or due to chemical induction.
- Wistar rats are commonly used in biomedical research, making their spontaneous pathologies relevant.
Observation:
- A spontaneous chondrosarcoma was identified in the deformed femur of a young male Wistar rat.
- Gross examination revealed abnormalities in the femur and knee joint.
- Histopathological analysis involved decalcification, paraffin embedding, sectioning, and H&E staining.
Findings:
- Microscopic examination showed a large, highly proliferative, noncapsulated growth.
- The neoplasm was of chondrocytic or chondroblastic origin.
- Proliferating chondrocytes exhibited an infiltrative growth pattern, invading bone and surrounding tissues.
Implications:
- This case contributes to the understanding of spontaneous tumor development in rodent models.
- Accurate diagnosis of spontaneous neoplasms is crucial for interpreting research data.
- Further research may explore the specific mechanisms underlying spontaneous chondrosarcoma formation in rats.
