Polyostotic Chondroblastic Osteosarcoma in a Kestrel ( Falco tinnunculus )

Area of Science:

• Veterinary Pathology
• Avian Medicine
• Wildlife Oncology

Background:

• Osteosarcoma is a primary malignant bone tumor affecting various species.
• Chondroblastic osteosarcoma is a subtype characterized by cartilage formation.
• Avian bone tumors are less commonly reported compared to mammalian counterparts.

Observation:

• A kestrel (Falco tinnunculus) presented with a fractured left tibiotarsus and limb deviation.
• Radiographic, cytologic, and histopathologic examinations were performed.
• The diagnostic workup revealed a polyostotic (multiple bone sites) chondroblastic osteosarcoma.

Findings:

• The kestrel was diagnosed with polyostotic chondroblastic osteosarcoma.
• This represents the first documented case of this specific tumor type in a kestrel.
• The tumor affected multiple bones, indicated by the term 'polyostotic'.

Implications:

• This case expands the known spectrum of bone tumors in birds.
• Early diagnosis and understanding of avian osteosarcoma are crucial for wildlife health.
• Further research into avian bone neoplasia is warranted.