title: Correlation of parathyroid scanning and anatomy in 261 unselected patients with sporadic primary hyperparathyroidism.
abstract: BACKGROUND
  Despite abundant literature on parathyroid scanning with technetium 99m-labeled cationic complexes, comprehensive clinical reports that unequivocally correlate scanning findings with the anatomy of parathyroid glands in extensive and homogeneous cohorts of patients are lacking.
  
  
  METHODS
  We analyzed the records of patients with sporadic primary hyperparathyroidism who had had a preoperative scan with either 99mTc-labeled sestamibi or 99mTc-labeled tetrofosmin at our institution and who were cured after a bilateral surgical neck exploration procedure.
  
  
  RESULTS
  In 261 patients, 710 normal and 347 abnormal glands (1494 +/- 2626 mg), including 15 glands within the mediastinum, were identified. Sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of scanning were 82%, 98%, 91%, 94%, and 94%, respectively, in 197 patients with uniglandular disease and 53%, 98%, 98%, 60%, and 72%, respectively, in 64 patients with multiglandular disease. False-positive uptakes were encountered in 17 patients (7%), 3 false-positive uptakes being within the mediastinum. If the unilateral approach had been followed, guidance with preoperative scanning would have significantly increased the number of effective unilateral neck exploration procedures (164 patients (63%) vs 78 patients (30%); P < .001). One abnormal gland would also have been neglected in 28 patients (11%).
  
  
  CONCLUSIONS
  Preoperative scanning would limit neck exploration procedures in two thirds of patients with sporadic primary hyperparathyroidism but may also increase the risk of failure in the most challenging cases.
authors.affiliation: Department of General and Endocrine Surgery, University Hospital, Lille, France.
authors.forename: F
authors.initials: F
authors.lastname: Pattou
authors.forename: G
authors.initials: G
authors.lastname: Torres
authors.forename: A
authors.initials: A
authors.lastname: Mondragon-Sanchez
authors.forename: D
authors.initials: D
authors.lastname: Huglo
authors.forename: H
authors.initials: H
authors.lastname: N'Guyen
authors.forename: B
authors.initials: B
authors.lastname: Carnaille
authors.forename: C
authors.initials: C
authors.lastname: Proye
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D006961:Hyperparathyroidism / Q000000981:diagnostic imaging* / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D009929:Organ Size; D009943:Organophosphorus Compounds; D015609:Organotechnetium Compounds; D010280:Parathyroid Glands / Q000033:anatomy & histology* / Q000473:pathology*; D011237:Predictive Value of Tests; D011877:Radionuclide Imaging; D019275:Radiopharmaceuticals; D012189:Retrospective Studies; D012680:Sensitivity and Specificity; D017256:Technetium Tc 99m Sestamibi
chemical_list: D009943:Organophosphorus Compounds; D015609:Organotechnetium Compounds; D019275:Radiopharmaceuticals; C078700:technetium tc-99m tetrofosmin; D017256:Technetium Tc 99m Sestamibi