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KMID : 1023519970200020183
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Korean Journal of Veterinary Service
1997 Volume.20 No. 2 p.183 ~ p.189
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Thoracic teratoma in a laying hen (Deklb brown warren). A case report
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Han Kyu-Sam
Lee Seong-Hyo
Suh Moon-Jeong
Oh Un-Pyung
Chai Hyo-Seok
You Hye-Jin
Lim Chae-Woong
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Abstract
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This article reports a spontaneous thoracic teratoma in a laying hen (Deklb brown warren). In this case, a 40 days old hen was submitted for necropsy as part of an investigation into a flock problem suspected Marek’s disease to Chonbuk Veterinary Service Laboratory in 1983. On the gross finding, mass was In the cranial subpulmonary cavity and attached to the vertebral column. It contained fully developed contour feathers. Histologically, feathers were arised from feather follicles complete with arrector plumi muscle, nerve, vessel and mucous gland composed with simple tall columnar epithelium. The outer surface of mass was lined by keratinized or nonkeratinized stratified squamous epithelium. It converted to pseudostratified ciliated columnar epithelium in some area. There were lymphocyte infiltration around gland tissue and eosinophilic intranuclear inclusion bodies in nonkeratinized epithelium. This thoracic teratoma was composed of ectodermal origin, squamous epithelium and nerve, and endodermal origin, mucous gland. This case in laying hen has never been reported in the literature in the world.
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KEYWORD
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Teratoma, Laying hen, Feather, Inclusion body
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