title: Para-hyoid ectopic parathyroid adenoma localized by Tc-99m MIBI SPECT.
abstract: A 64-year-old woman with a history of I-131 ablation for Graves hyperthyroidism and bilateral parathyroid exploration with resection of a left inferior parathyroid adenoma presented 2 years after surgery with marked fatigue, irritability, and joint pain. Laboratory testing revealed an elevated calcium and parathyroid hormone levels suspicious for hyperparathyroidism. The ultrasound indicated no evidence of a parathyroid adenoma. Tc-99m-MIBI SPECT demonstrated a focus of uptake posteroinferior to the right submandibular gland, suspicious for a parathyroid adenoma. Repeat ultrasound and CT confirmed the presence of a para-hyoid adenoma inferior to the right submandibular gland.
authors.affiliation: Department of Radiology, University of Pittsburgh Medical Center, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15213, USA.
authors.forename: Malolan S
authors.initials: MS
authors.lastname: Rajagopalan
authors.forename: Vinod V
authors.initials: VV
authors.lastname: Narla
authors.forename: Tanuja
authors.initials: T
authors.lastname: Kanderi
authors.forename: Ashok
authors.initials: A
authors.lastname: Muthukrishnan
mesh_terms: D002828:Choristoma / Q000000981:diagnostic imaging* / Q000473:pathology*; D005260:Female; D006801:Humans; D006928:Hyoid Bone / Q000000981:diagnostic imaging* / Q000473:pathology*; D008875:Middle Aged; D010282:Parathyroid Neoplasms / Q000000981:diagnostic imaging*; D017256:Technetium Tc 99m Sestamibi; D015899:Tomography, Emission-Computed, Single-Photon; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography
chemical_list: D017256:Technetium Tc 99m Sestamibi