Importance de l'examen histologique dans le diagnostic du tératome : cas d'un coq fermier

Teratomas are defined as tumors of multiple tissue origin. Teratomas are classified into a category of the germ cell tumors described in human beings, frequently observed in horses and very rarely observed in poultry. This case report concerns an 18 months old rooster showing anorexia and respiratory disorders which was admitted to Veterinary School of Sidi Thabet (Tunisia). In post-mortem, autopsy was performed in order to better understand causes of death. Firstly, macroscopic examination revealed hypertrophy of both testicles. Consequently, liver, bowels and lungs were compressed by the testicles. Secondly, histological examination report a typical case of testicular teratoma, characterized by mixture tissue elements; consisting of immature and mature well-differentiated tissue. The present report points the importance of histological studies in the diagnosis and classification of teratoma in poultry.