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Epidemiological and Pathological Characterization of Feline Injection Site Sarcomas in Southern Brazil
B S Cecco1, L C Henker1, C De Lorenzo1
1Department of Veterinary Pathology, Brazil.
Journal of Comparative Pathology
|November 7, 2019
Summary
Feline injection site sarcoma (FISS) is a malignant tumor linked to medical interventions. This study details FISS characteristics in Brazil, highlighting common locations and histological types in affected cats.
Area of Science:
- Veterinary Pathology
- Oncology
- Epidemiology
Background:
- Feline injection site sarcoma (FISS) is a highly malignant mesenchymal neoplasm.
- Tumors arise at sites of prior medical intervention, such as injections or implants.
- Understanding FISS epidemiology and pathology is crucial for veterinary care.
Purpose of the Study:
- To investigate the epidemiological and pathological features of FISS in southern Brazil.
- To analyze data from biopsy samples collected between 2007 and 2017.
- To provide insights for improved FISS management and information dissemination.
Main Methods:
- Retrospective analysis of 89 FISS biopsy samples from the Federal University of Rio Grande do Sul.
- Extraction of epidemiological data (breed, age, sex) and gross findings (location, size, invasion).
- Histological examination to confirm diagnosis and identify tumor subtypes.
Main Results:
- Most affected cats were mixed-breed females, with a median age of 10 years.
- Tumors frequently exceeded 2 cm, with common locations including the thoracic wall, flank, and interscapular region.
- Histologically, tumors were malignant mesenchymal neoplasms, often fibrosarcomas, with necrosis and inflammation.
Conclusions:
- FISS in Brazil shares similarities with global findings but requires regional data dissemination.
- Veterinarians need updated information on FISS epidemiology and management guidelines.
- Further research may refine understanding of FISS pathogenesis and treatment strategies.
