Which radiographic feature is NOT associated with hyperparathyroidism?

The presence of brown tumors late in hyperparathyroidism is not classified as a radiographic feature associated with the condition. Brown tumors are a manifestation of osteitis fibrosa cystica, which arises due to the underlying effects of hyperparathyroidism on bone. These lesions can be found in various bones, including the jaws, but they are not radiographic features that are solely diagnostic of hyperparathyroidism when comparing them with the other options listed.

Other options describe well-documented radiographic features associated with hyperparathyroidism. The demineralization of cortical boundaries in the jaws leads to areas where the cortical bone becomes less dense, making it more susceptible to injury and easier to identify on X-rays. Decreased jaw density contributes to a radiolucent appearance, indicating that the bone mass is reduced, which can be seen in various radiographs of patients with hyperparathyroidism. The ground glass appearance in trabecular patterns reflects the generalized demineralization that occurs in bones due to the excessive parathyroid hormone, leading to a distinctive appearance observable on radiographs.

Thus, while brown tumors are certainly a significant clinical finding in the later stages of the disease, they do not constitute a direct radiographic characteristic by themselves,