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Primary cardiac fibrosarcoma in a dog
Hiroo Madarame1, Kanako Sato, Kikumi Ogihara
1Laboratory of Veterinary Teaching Hospital, School of Veterinary Medicine, Azabu University, Kanagawa, Japan.
The Journal of Veterinary Medical Science
|September 9, 2004
Summary
A rare cardiac fibrosarcoma, a type of heart tumor, was found in a young Chihuahua. This canine heart cancer presented as a mass in the right atrium, with no signs of spreading.
Area of Science:
- Veterinary Pathology
- Canine Oncology
- Cardiac Tumors
Background:
- Primary cardiac tumors in dogs are exceptionally rare.
- Fibrosarcomas can occur in various locations but are seldom found primarily in the heart.
Observation:
- A 6-year-old Chihuahua presented with a firm, whitish, spherical mass within the right atrium.
- Necropsy revealed the cardiac mass with distinct histopathological features.
Findings:
- Histopathology showed a fibrosarcoma composed of spindle-shaped cells and multinucleated giant cells within a collagenous stroma.
- Ultrastructural analysis confirmed tumor cells primarily as fibroblasts, with undifferentiated giant cells.
- No evidence of metastasis was detected at necropsy.
Implications:
- This case highlights the extreme rarity of primary cardiac fibrosarcomas in dogs.
- Understanding the presentation and characteristics of such rare tumors is crucial for veterinary diagnostics.
- Further research into cardiac sarcomas in canines may improve diagnostic and therapeutic strategies.