title: Ectopic pyriform sinus parathyroid adenoma.
abstract: OBJECTIVE
  To describe the diagnosis and treatment of ectopic pyriform sinus parathyroid adenoma.
  
  
  METHODS
  A 44-year-old woman presented with persistent primary hyperparathyroidism after previous failed cervical exploratory surgery.
  
  
  RESULTS
  Diagnosis of ectopic pyriform sinus parathyroid adenoma was suggested by computed tomography and technetium-99m sestamibi scintigraphy (99mTc-MIBI SPECT/CT). A submucosal tumor was identified under laryngoscopy and resected by endoscopic CO2 laser. Histopathology confirmed the diagnosis of parathyroid adenoma.
  
  
  CONCLUSIONS
  Ectopic pyriform sinus locations are rare in parathyroid adenoma. 99mTc-MIBI SPECT/CT facilitates diagnosis, especially in case of previous failed neck exploration. Endoscopic CO2 laser resection is the treatment of choice.
authors.affiliation: Institut universitaire de la face et du cou, groupement de coopération Sanitaire, centre hospitalier universitaire de Nice, centre Antoine-Lacassagne,31, avenue de Valombrose, 06107 Nice cedex 2, France. guevara.n@chu-nice.fr
authors.forename: N
authors.initials: N
authors.lastname: Guevara
authors.forename: B
authors.initials: B
authors.lastname: Agopian
authors.forename: D
authors.initials: D
authors.lastname: Benisvy
authors.forename: S
authors.initials: S
authors.lastname: Lassalle
authors.forename: J
authors.initials: J
authors.lastname: Santini
authors.forename: L
authors.initials: L
authors.lastname: Castillo
mesh_terms: D000236:Adenoma / Q000150:complications / Q000000981:diagnostic imaging / Q000473:pathology*; D000328:Adult; D002828:Choristoma; D004724:Endoscopy; D005260:Female; D006801:Humans; D049950:Hyperparathyroidism, Primary / Q000209:etiology*; D053685:Laser Therapy / Q000379:methods; D054020:Lasers, Gas / Q000627:therapeutic use; D010282:Parathyroid Neoplasms / Q000150:complications* / Q000000981:diagnostic imaging / Q000473:pathology*; D056144:Pyriform Sinus; D011877:Radionuclide Imaging; D017256:Technetium Tc 99m Sestamibi
chemical_list: D017256:Technetium Tc 99m Sestamibi