Zygomatic Arch Parosteal Osteosarcoma in Dogs and a Cat. Academic Article uri icon

abstract

  • Parosteal osteosarcoma is a rare, slow-growing tumor most commonly arising from the surface of long bones. Tissue or histological sections from 5 dogs and 1 cat with zygomatic arch masses were examined. Clinical presentations varied from chronic sneezing to facial swelling. Imaging consistently demonstrated osseous proliferation in the area of the zygomatic arch. Histologically, the masses were characterized by well-differentiated fibro-osseous and chondroid components that radiated outward from the periosteum of the zygomatic bone. Cellular atypia and mitotic figures were uncommon. Parosteal osteosarcomas have previously been reported in the skulls of dogs and cats, but only 1 has been reported on the zygomatic arch. Initially, these tumors are of low histologic low grade, but with time, they can show more aggressive behavior and invade the underlying bone.

published proceedings

  • Vet Pathol

altmetric score

  • 0.75

author list (cited authors)

  • Gold, R., Oliveira, F., & Pool, R.

citation count

  • 7

complete list of authors

  • Gold, Randi||Oliveira, Fabiano||Pool, Roy

publication date

  • March 2019