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Operating Procedures of the Electrochemotherapy for Treatment of Tumor in Dogs and Cats

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Extraskeletal osteochondroma on a cat´s elbow.

Chantal Rosa¹, Robert M Kirberger

¹Department of Companion Animal Clinical Studies, University of Pretoria, South Africa. chantal.rosa@up.ac.za

Journal of the South African Veterinary Association

|January 19, 2013

Summary

A rare solitary extraskeletal osteochondroma was diagnosed in a feline leukemia virus (FeLV)-positive cat. This benign tumor presented as a rapidly growing mass, requiring surgical removal and biopsy for confirmation.

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Area of Science:

Veterinary Oncology
Comparative Pathology
Feline Medicine

Background:

Extraskeletal osteochondromas are benign cartilaginous tumors that can occur in various species.
Feline extraskeletal osteochondromas are often associated with feline leukemia virus (FeLV) infection.
These tumors can be challenging to differentiate from malignant bone tumors based on imaging alone.

Observation:

A solitary extraskeletal osteochondroma was diagnosed in a 6-year-old, castrated male Burmese cat.
The cat was positive for feline leukaemia virus (FeLV).
The tumor presented as a rapidly growing, solid, non-painful mass on the craniolateral aspect of the left elbow.

Findings:

Radiographs revealed a well-circumscribed, mineralized mass measuring 2.0 cm × 1.5 cm × 1.5 cm, separate from the underlying bone.
Surgical excisional biopsy confirmed the diagnosis of extraskeletal osteochondroma.
The tumor was benign.

Implications:

Feline extraskeletal osteochondromas are benign but have the potential to transform into malignant osteosarcomas or chondrosarcomas.
Early diagnosis and surgical removal are crucial for managing these tumors.
Further research is needed to differentiate benign extraskeletal osteochondromas from malignant bone tumors radiographically.