Osteoma in a Domestic Goose: Radiological and Histopathological Evaluation

The aim of this work was a detailed radiological and histopathological evaluation of a solid tumour, presumably cancerous in nature, diagnosed in a 2-year-old goose (Anser domesticus). The radiograph examination showed an osseous change with the involvement of cervical vertebrae. A tumour measuring 15x10x9 cm was dense and had well-defined borders, suggesting the presence of calcified bone tissue. Histopathology revealed a well-defined benign neoplasm derived from bone and consisted large area of irregular, disorganized bone trabeculae, surrounded by a layer of osteoblasts. The tumour has been classified as an osteoma, which originates from the body of the vertebrae. Osteoma is a benign, well-differentiated tumour with a structure that resembles bone tissue. It presents as a well-demarcated, hard, single tumour that can grow to a considerable size. The aetiology of osteomas in birds remains unclear, because of the small number of cases described. Therefore, the influence of factors such as age, breed or sex, trauma, embryonic malformation, infection, developmental disorders, genetic factors on the development of this type of tumour has not been established. Trauma seems to be the most obvious cause of growth in this case. This work provides valuable information about osteomas in birds, important for understanding these neoplasms.