Anatomo-clinical aspects of osteosarcomas in dogs and cats.

Summary The authors describe 19 cases of osteosarcomas in dog and cat, presented at the Faculty of Veterinary Medicine in Bucharest between 200872009 for diagnosis and therapy. Clinical examination followed by radiological examination of the modified area was used. The certitude diagnosis was established after cytomorphologic exam of the biopunction achieved with a fine needle into the affected region. Following this examination were described 4 morphocytologic forms of osteosarcoma. They are: 7 5 cases of osteocitar osteosarcoma 7 8 cases of osteoblastic osteosarcoma 7 4 cases of osteoclastic osteosarcoma 7 1 case of condrosarcoma The frequency of these neoplastic forms of malignancies is generally moderate in pets. The most frequent type is osteoblastic osteosarcoma. From the study of the two species (canine and feline), the incidence of bone cancer in canines is more prone to disease. Data from literature are generally modest, indicating that differences primarily are relating to the primary site of neoformation. So, this neoformations are belonging especially to the long bones. Short bones, cranio7facial bones, vertebrae, sacrum, sternum and soft tissue extra bone territories are affected in a more reduce percentage. After surgical removal of a bone neoplasm, the evolution of animal to exitus is an average of about one year. Metastasis occurs in over 90% of cases, at pulmonary level. Materials and methods