Huge brown tumor of the rib in an unlocatable hyperparathyroidism patient with “self-recovered” serum calcium and parathyroid hormone: A case report

Figure 1 Ultrasound of parathyroid revealed no abnormal changes in the region of parathyroids, nor in ^99mTc-methoxyisobutyl isonitrile imaging. A-B showed that there was no abnormality of parathyroid in ^99mTc-methoxyisobutyl isonitrile imaging, nor any other abnormal radioactivity concentrations.