Vertebral telangiectatic osteosarcoma in a dog.

  title={Vertebral telangiectatic osteosarcoma in a dog.},
  author={Georgia D Brellou and Nikos Papaioannou and Michail N Patsikas and Zoe S. Polizopoulou and Ioannis Vlemmas},
  journal={Veterinary clinical pathology},
  volume={33 3},
Telangiectatic osteosarcoma (TOS) affecting the seventh cervical vertebra (C7) was diagnosed in a 4-year-old male dog with signs of locomotor dysfunction. Bone lysis and an extradural-extramedullary mass were observed in radiographs and occipital myelograms. The diagnosis was confirmed by histopathologic and immunohistochemical examination of the mass. The tumor was composed of large blood-filled cavities lined by anaplastic stromal cells (malignant osteoblasts). Around the cavities were… CONTINUE READING