AI Article Synopsis
- A 7-year-old backyard Leghorn chicken unexpectedly died and was submitted for postmortem examination.
- During the examination, a hemorrhagic mass in the neck area was found, which upon closer inspection, showed characteristics of a neoplasm composed of epithelial cells and lymphocytes.
- The lesion was classified as a thymoma based on specific microscopic features and immunohistochemistry tests, marking a rare diagnosis since only five cases have been recorded in birds at the facility from 1990 to 2019.
Article Abstract
A 7-y-old backyard Leghorn chicken () was submitted to the California Animal Health and Food Safety Laboratory System (CAHFS)-Turlock branch for postmortem examination, with a history of unexpected death. At postmortem examination, a hemorrhagic soft tissue mass was observed in the cervical region. Microscopically, a densely cellular neoplasm of polygonal epithelial cells and small lymphocytes was observed. The microscopic features of the neoplasm in combination with positive immunohistochemistry for pancytokeratin and CD3 were used to classify the lesion as a thymoma. Thymoma was diagnosed in only 5 birds submitted to CAHFS from 1990 to 2019. Thymoma has been described only rarely in birds, and is an unusual diagnosis in backyard chickens.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7953091 | PMC |
| http://dx.doi.org/10.1177/1040638721990896 | DOI Listing |
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Article Synopsis
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