title: Multiple brown tumors simulating bone metastases: a case of parathyroid adenoma coexisting with papillary carcinoma of the thyroid.
abstract: A 55-year-old man with multiple brown tumors who initially was thought to have multiple bone metastases is described. He had elevated parathyroid hormone levels and was referred to the nuclear medicine department, where a parathyroid adenoma was diagnosed. At surgery, abnormal lymph nodes were seen, which were found to contain metastatic thyroid papillary carcinoma cells. On further exploration, the patient's bone scintigraph revealed multiple sites of increased uptake but no bone abnormalities on whole-body iodine and Tc-99m MIBI scans.
authors.affiliation: Department of Nuclear Medicine, Hacettepe University Medical Faculty, Sihhiye, Ankara, Turkey.
authors.forename: M
authors.initials: M
authors.lastname: Caglar
authors.forename: S
authors.initials: S
authors.lastname: Naldöken
mesh_terms: D000236:Adenoma / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D001859:Bone Neoplasms / Q000000981:diagnostic imaging / Q000556:secondary; D002291:Carcinoma, Papillary / Q000473:pathology*; D003937:Diagnosis, Differential; D005189:False Positive Reactions; D018212:Giant Cell Tumor of Bone / Q000000981:diagnostic imaging / Q000556:secondary; D006801:Humans; D008297:Male; D008875:Middle Aged; D009378:Neoplasms, Multiple Primary / Q000000981:diagnostic imaging / Q000473:pathology; D010282:Parathyroid Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D011877:Radionuclide Imaging; D019275:Radiopharmaceuticals; D017256:Technetium Tc 99m Sestamibi; D013964:Thyroid Neoplasms / Q000473:pathology*
chemical_list: D019275:Radiopharmaceuticals; D017256:Technetium Tc 99m Sestamibi