Thoracic teratoma in a laying hen (Deklb brown warren). A case report

산란계에서의 흉강내 기형종 발생보고

  • 한규삼 (전라북도 가축위생시험소) ;
  • 이성효 (전라북도 가축위생시험소) ;
  • 서문정 (전라북도 가축위생시험소) ;
  • 오언평 (전라북도 가축위생시험소) ;
  • 채효석 (전라북도 가축위생시험소) ;
  • 유혜진 (전북대학교 수의과대학) ;
  • 임채웅 (전북대학교 수의과대학)
  • Published : 1997.05.01


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.