SESC case archive

24/12/2019 | Poultry

Squamous cell carcinoma in laying hens

Samples were submitted of two laying hens with multiple skin lesions on the back, neck and limbs. The lesions were circular, prominent and crusty. Veterinarians suspected of Marek's Disease or Avian pox.

The histopathological study showed that the lesions corresponded to a malignant neoplastic proliferation of skin cells, squamous cell carcinoma, also known as avian keratoacanthoma.

First case: laying hen with crateriform skin lesions on the skin of the back and limbs.

The second case is a laying hen with more severe skin lesions.

Detail of the prominent lesions with an ulcerated central area giving them a crater-like appearance.

Detail of the lesions.

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