The most frequently osteoblastoclastoma is located at tubular bones epiphysis. Not epiphysis area location is very seldom. Dull ache increasing with motion is reported. Later osteal deformations occures. Child of 10 y.o.
Cortical layer is thin and atrophic.
Operation stage . Visual field is full with huge amount of gian cells. Giant cells contain dozens of nuclei and are mixed with small cells. Nuclei are usually center located. After operation X-ray.