title: Diagnostic localization studies for primary hyperparathyroidism. A suggested algorithm.
abstract: OBJECTIVE
  To assess the accuracy of preoperative imaging studies in primary hyperparathyroidism.
  
  
  METHODS
  Retrospective review of all patients treated surgically for primary hyperparathyroidism at The University of California-San Diego Medical Center between January 1990 and May 1992. Results of preoperative imaging studies were compared with surgical and pathologic findings.
  
  
  METHODS
  The University of California-San Diego Medical Center, a primary care and referral center.
  
  
  METHODS
  Twenty-eight patients were included in the study, and a total of 41 imaging studies were obtained.
  
  
  METHODS
  The accuracy of preoperative imaging studies in correctly localizing the site of a parathyroid adenoma.
  
  
  RESULTS
  Ultrasound correctly identified the site of a solitary parathyroid adenoma in 82% of cases, and magnetic resonance imaging in 80% of cases. The adenomas that were not localized by ultrasound were correctly localized by magnetic resonance imaging. These findings are discussed within the context of recent trends in parathyroid surgery.
  
  
  CONCLUSIONS
  Based on the results and a review of the literature, a simple algorithm for the use of these imaging studies is proposed. Use of this algorithm will improve preoperative planning, and potentially reduce operative time and morbidity.
authors.affiliation: Division of Otolaryngology-Head and Neck Surgery, University of California-San Diego Medical Center.
authors.forename: M S
authors.initials: MS
authors.lastname: Weinberger
authors.forename: K T
authors.initials: KT
authors.lastname: Robbins
mesh_terms: D000236:Adenoma / Q000150:complications / Q000175:diagnosis* / Q000000981:diagnostic imaging; D000465:Algorithms; D006801:Humans; D006961:Hyperparathyroidism / Q000209:etiology*; D008279:Magnetic Resonance Imaging; D010282:Parathyroid Neoplasms / Q000150:complications / Q000175:diagnosis* / Q000000981:diagnostic imaging; D011237:Predictive Value of Tests; D012189:Retrospective Studies; D014463:Ultrasonography