Tuyển tập các báo cáo nghiên cứu khoa học quốc tế về bệnh thú y đề tài: Frontal chondrosarcoma in a cat | J. Vet. Sei. 2003 4 2 193-194 JOURNAL OF Veterinary Science - Short Communication - Frontal Chondrosarcoma in a Cat F. Yildiz A. Gurel T. Yesildere and K. Ozer1 Department of Pathology and Surgery Faculty of Veterinary Medicine Istanbul University Turkey Received January 11 2003 Accepted July 23 2003 Abstract In this case chondrosarcoma detected on the frontal bone of a 12-year-old female cross-bred cat was examined clinically and histopathologically. After being processed routinely specimens were stained with Hematoxylin Eosin and Crossman Modification of Mallars Triple Stain. The neoplasm was compost d of numerous fusiform mesenchymal cells intimately associated with the formation of lobular structure separated by thin fibrous septae. In the center there were observed atypical chondrocytes forming the matrix of the tumoral mass surrounded by round-ovoid fusiform mesenchymal cells having interference with the septal tissue at the periphery. Few mitotic figures were detected in these areas. The tumors pattern localization the species and the age of the animal were consistent with those of multilobular chondroma known as chondroma rodens. Although the mitotic figures and the wide atypia indicated that the entity was a neoplasm of malign type it was more likely considered to be the malign transformation of chondroma rodens. The ỊM st-surgical outcome of the Jjatient was observed and recurrence on the same site was reported within 2 months. Key words multilobular chondroma cats macroscopical and microscopical findings Multilobular chondromas and osteomas MIX O are rarely encountered mesenchymal tumors generally developing on the canine skull with a locally invasive character 1 2 4 6 . MIX O were formerly classified as a particular type of cartilage forming tumor by WHO and also known as chondroma rodens calcifying aponeurotic fibroma and canine cartilaginous analogue of fibromatosis 3 61. The neoplasm has a multiple tabulated structure each lobule of which is .
