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Histological Classification of Bone and Joint Tumors of Domestic Animals

 
I. Benign Tumors
A. Osteoma
B. Ossifying fibroma
C. Myxoma of the jaw
D. Osteochondroma
E. Feline osteochondromatosis
F. Chondroma
G. Hemangioma
II. Malignant Tumors
A. Central
1. Osteosarcoma
a. poorly differentiated
b. osteoblastic
- nonproductive
- productive
c. chondroblastic
d. fibroblastic
e. telangiectatic
f. giant cell type
2. Chondrosarcoma
3. Fibrosarcoma
4. Hemangiosarcoma
5. Giant cell tumor of bone
6. Multilobular tumor of bone
B. Peripheral
1. Periosteal chondrosarcoma
2. Periosteal fibrosarcoma
3. Maxillary fibrosarcoma (dogs)
4. Periosteal osteosarcoma
5. Parosteal osteosarcoma
C. Joint tumors
1. Synovial sarcoma
D. Miscellaneous tumors
1. Liposarcoma
2. Malignant mesenchymoma
3. Others
E. Tumor-like lesions
A. Fibrous dysplasia
B. Solitary bone cyst
C. Juxtacortical bone cyst
D. Epidermoid cyst of the phalanx
E. Myositis ossificans
F. Villonodular synovitis
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