Submitted to: Diseases of Poultry
Publication Type: Book / Chapter
Publication Acceptance Date: January 3, 2007
Publication Date: June 20, 2008
Citation: Fadly, A.M. 2008. Neoplastic diseases: Introduction. In: Saif, Y.M., Fadly, A.M., Glisson, J.R., McDougald, L.R., Nolan, L.K., Swayne, D.E., editors. Diseases of Poultry. 12th edition. Ames, IA: Iowa State University Press. p. 449-451. Technical Abstract: Neoplastic diseases of poultry comprise a variety of related and unrelated conditions possessing a single common denominator: neoplastic character. This group of diseases is divided into two main categories, depending on whether the etiologic agent is known. In addition to causing economic loss from tumor mortality as well as poor performance, some of these neoplastic diseases have served as highly suitable models for studying various phenomena of neoplasia. Indeed, medical research has found avian oncology an abundant resource. This chapter deals primarily with the three most economically important virus-induced neoplastic diseases of poultry, namely Marek’s disease, caused by a herpesvirus, and the avian leukoses and reticuloendotheliosis, caused by retroviruses. Virus-induced tumors are principally of mesodermal origin and are transmissible. These neoplastic diseases or disease complexes are described, each in a separate section because of its etiologic distinctness.