18F-FDG-Detected Brown Tumor Confined to the Maxillary Bone With Parathyroid Adenoma.

Yamaga, Emi; Fujioka, Tomoyuki; Asakage, Takahiro; Miura, Keiko; Tateishi, Ukihide · Clin Nucl Med · 2022

case_report · Level V

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Abstract

Brown tumor is a reactive osteolytic lesion associated with hyperparathyroidism and an extremely rare form of a single lesion in the maxilla. We report the case of a 57-year-old woman with renal dysfunction, nasal obstruction, and hypercalcemia. MRI and CT revealed a huge osteolytic lesion in the maxilla. 18F-FDG PET/CT demonstrated marked FDG uptake within the mass and the lower-left lobe of the thyroid gland. 99mTc-methoxy-isobutyl-isonitrile scintigraphy suggested that this accumulation was a parathyroid adenoma. Parathyroid adenoma resection was performed, and the maxillary tumor was diagnosed as brown tumor. FDG PET/CT was helpful in evaluating brown tumor and detecting parathyroid adenoma.

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