title: Parathyroid imaging. Use of dual isotope scintigraphy for the localization of adenomas before surgery.
abstract: Seventy-nine patients with primary hyperparathyroidism, whose average preoperative blood calcium level was 11.6 mg/dl, underwent thallium-technetium dual isotope scintigraphy of the thyroid and parathyroids. For patients who had surgery, the detection and localization rate of parathyroid disease or the sensitivity was low (0.53), but the positive predictive value for the location was high (0.80). Correct localization correlated positively with the weight of the tumor but not significantly with the parathyroid hormone blood level nor with the blood calcium level. Unprocessed data alone were sufficient to predict correctly the location in two thirds of the detected cases. Computer processing increased the sensitivity without decreasing the specificity. Those results, at variance with earlier published data but congruent with another more recent study, require a reevaluation of the role of this scintigraphic technique in the management of hyperparathyroidal patients.
authors.affiliation: Palo Alto Medical Foundation, California.
authors.forename: L V
authors.initials: LV
authors.lastname: Basso
authors.forename: C
authors.initials: C
authors.lastname: Keeling
authors.forename: M L
authors.initials: ML
authors.lastname: Goris
mesh_terms: D000236:Adenoma / Q000150:complications / Q000000981:diagnostic imaging* / Q000453:epidemiology; D005260:Female; D006801:Humans; D006961:Hyperparathyroidism / Q000209:etiology; D008297:Male; D008875:Middle Aged; D010280:Parathyroid Glands / Q000000981:diagnostic imaging*; D010282:Parathyroid Neoplasms / Q000150:complications / Q000000981:diagnostic imaging* / Q000453:epidemiology; D011237:Predictive Value of Tests; D011300:Preoperative Care; D011877:Radionuclide Imaging; D012680:Sensitivity and Specificity; D013670:Sodium Pertechnetate Tc 99m; D013382:Subtraction Technique; D013794:Thallium Radioisotopes
chemical_list: D013794:Thallium Radioisotopes; D013670:Sodium Pertechnetate Tc 99m