Osteitis fibrosa cystica (von Recklinghausen disease of bone)
Chapter: 21
Osteoclastic bone resorption seen in hyperparathyroidism. X-ray changes include resorption of the distal phalanges and the lamina dura of the teeth. Gross lesions caused by hyperparathyroidism have a gelatinous, brown (anchovy paste) appearance and are often referred to as "brown tumors".