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Air Sac Cystadenoma in a Pet Chicken
Daniel Felipe Barrantes Murillo1, Cameron Ellington2,3, Oscar Fletcher2
1Department of Pathobiology, College of Veterinary Medicine Auburn University, Auburn, AL 36849.
Avian Diseases
|August 10, 2024
Summary
A rare air sac cystadenoma was diagnosed in a Brahma chicken presenting with respiratory distress. This case highlights the infrequent occurrence and limited documentation of benign respiratory neoplasms in poultry.
Area of Science:
- Avian pathology
- Veterinary oncology
Background:
- Primary respiratory neoplasia is uncommon in avian species.
- Benign air sac tumors are poorly documented in poultry literature, necessitating further case reports.
Observation:
- A 2-year-old Brahma chicken exhibited a 3-week history of progressive respiratory signs, including wet sneezing and wheezing.
- A palpable mass was noted above the left clavicle, near the crop area.
- The bird was euthanatized due to the chronic and worsening condition.
Findings:
- Postmortem examination revealed a 2 cm pale brown mass within the left cervical air sac.
- Histopathology confirmed a pedunculated, cystic neoplasm composed of cuboidal cells, consistent with an air sac cystadenoma.
- Immunohistochemistry showed strong cytoplasmic staining for cytokeratin AE1/AE3.
Implications:
- This case contributes to the limited understanding of benign air sac neoplasms in poultry.
- Accurate diagnosis and documentation of such rare conditions are crucial for advancing avian veterinary oncology.
- Further research into the incidence and characteristics of avian respiratory tumors is warranted.
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