LUCRĂRI ŞTIINłIFICE MEDICINĂ VETERINARĂ VOL. XLII (2), 2009, TIMIŞOARA 360 ANATOMO-CLINICAL ASPECTS OF OSTEOSARCOMAS IN DOGS AND CATS EMILIA BALINT, I.C. GARJOABĂ, N. TUDOR, N. MANOLESCU Faculty of Veterinary Medicine Bucharest, Splaiul Independentei No.105, 050097, Bucharest, Romania Summary The authors describe 19 cases of osteosarcomas in dog and cat, presented at the Faculty of Veterinary Medicine in Bucharest between 2008-2009 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: - 5 cases of osteocitar osteosarcoma - 8 cases of osteoblastic osteosarcoma - 4 cases of osteoclastic osteosarcoma - 1 case of condrosarcoma Key words: osteosarcoma, bone tumors, dog, cat 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, cranio-facial 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 Within a year we have investigated 19 cases of osteosarcomas (17 canine and 2 feline). The general appearance of the syndrome is characterized by apathy, anorexia and weight loss, there are issues related to the clinical syndrome with focal deformation the affected region without sensitivity to palpation and instauration of a certain degree of limp. By palpation is found that the tegumen thas no deep adherence to plans. Clinical examinations were followed by X-ray examination of the bone to see the