title: Unusual Ectopic Parathyroid Adenoma: A Case Report.
abstract: An ectopically placed parathyroid in the mediastinum is a rare cause of persistent or recurrent primary hyperparathyroidism. They are rarely in a huge size. We report a case of a 70-year-old man with a history of total parathyroidectomy and thymectomy presented with a lack of appetite, nausea, and generalized bone pain, polydipsia and a calcium level of 14.4 mg/dl. 99mTc-sestamibi scintigraphy with single-photon emission computerized tomography (SPECT) showed a focal zone of radiotracer accumulation in the midline of anterior chest wall (xiphoid level). The mass excised from our patient surgically was 75 grams. This weight and location of the tumor is a very rare finding in parathyroid adenomas.
authors.affiliation: Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran.
authors.forename: Habibeh
authors.initials: H
authors.lastname: Taghavi Kojidi
authors.affiliation: Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran.
authors.forename: Nazanin
authors.initials: N
authors.lastname: Vagharimehr
authors.affiliation: Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran.
authors.forename: Shahrzad
authors.initials: S
authors.lastname: Mohseni
authors.affiliation: Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran.
authors.forename: Mohammad
authors.initials: M
authors.lastname: Pajouhi
authors.affiliation: Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran.
authors.forename: Mohammad Reza
authors.initials: MR
authors.lastname: Mohajeri-Tehrani
mesh_terms: D000236:Adenoma / Q000601:surgery*; D000368:Aged; D006801:Humans; D049950:Hyperparathyroidism, Primary / Q000503:physiopathology; D008297:Male; D010280:Parathyroid Glands / Q000473:pathology*; D010282:Parathyroid Neoplasms / Q000601:surgery; D016105:Parathyroidectomy; D011877:Radionuclide Imaging / Q000379:methods; D017256:Technetium Tc 99m Sestamibi; D015899:Tomography, Emission-Computed, Single-Photon; D016896:Treatment Outcome
chemical_list: D017256:Technetium Tc 99m Sestamibi
keywords: Giant ectopic parathyroid adenoma; Recurrent primary hyperparathyroidism