Osteitis fibrosa cystica is seen in:
Brown tumor /osteitis fibrosa cystica One of the manifestations of Hyperparathyroidism Bony trabeculae are replaced by fibrous tissue and there is cystica that is cystic cavity in bone filled with blood and blood degradation products giving it brown color. Hemosiderin impas the brown color (hence the name of the lesions) Histologically brown tumors are identical to GCTs (both are osteoclastomas),
Hyperparathyroidism
Hypoparathyroidism
Hypothyroidism
Hypehyroidism
Bone and Imaging