There is no defined age group for this tumor except that patients are generally older than those found with a non-ossifying fibroma.
Clinically, patients report pain from the lesion, often of months or years duration. Pain may be associated with pathological fracture. There may be some local tenderness, but no swelling or mass is seen, and there are no systemic symptoms. There is normally no impairment of the function of the nearby joint. Spinal lesions may cause neurologic defect by pressing on the spinal cord.
It has a lytic, loculated appearance with prominent sclerosis of the edges of the lesion.
Treatment consists of careful and complete curettage and filling of the defect with graft material, bone cement, or other suitable bone void filler.