KROK 1 Stomatology 2014 – Question 198 · KROK (Dentistry)

Microscopic examination of the biopsy sample taken from a deformed upper jaw bone revealed areas of bone resorption and replacement of bone tissue by randomly arranged bundles of mature collagen fibers with spindle and stellate cells; primitive structure of trabeculae; myxomatous foci. What is the most likely diagnosis?

  1. A. Osteosarcoma
  2. B. Osteoporosis
  3. C. Osteoma
  4. D. Fibrous osteodysplasia
  5. E. Osteoblastosarcoma
Hint

The key finding is bone replaced by disorganized fibrous tissue with immature, primitive trabeculae, without atypia, in a deformed jaw.

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