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Use of dual energy computed tomography versus conventional techniques for preoperative localization in primary hyperparathyroidism: Effect of preoperative calcium and parathyroid hormone levels

Published:January 16, 2023DOI:https://doi.org/10.1016/j.amjsurg.2023.01.017

      Highlights

      • Sensitivity and accuracy of pre-operative localization of parathyroid glands is associated with Ca and PTH levels.
      • DECT had a higher sensitivity and accuracy than CT MIBI and US in all patient subgroups.
      • DECT had a salvage detection rate of 52.3% in patients for whom CT MIBI and US did not localize.
      • DECT can be utilized as a first-line or salvage test when CT-MIBI and US are non-localizing.

      Abstract

      Background

      We aimed to investigate the association of preoperative calcium and parathyroid hormone (PTH) levels with sensitivity and accuracy of dual energy computed tomography (DECT), single-photon emission CT with 99mTc-sestamibi (CT-MIBI), and ultrasound (US) for pre-operative localization primary hyperparathyroid (PHP) patients.

      Methods

      Patients undergoing parathyroidectomy for PHP at a tertiary care facility who underwent DECT, CT-MIBI and US between 2012 and 2021 were stratified by preoperative calcium and PTH levels.

      Results

      Of 278 patients, those with high calcium and PTH levels had a higher sensitivity and accuracy with DECT (87.7%, 85.2%) compared to CT-MIBI (82.3%, 79.0%), and US (61.7%, 53.1%). DECT was more sensitive and accurate than other preoperative localization techniques in subgroups with normal PTH (DECT sensitivity 60.9%, accuracy 52.1%) and normal calcium levels (41.7%, 33.3%).

      Conclusion

      Preoperative calcium and PTH were associated with sensitivity and accuracy of pre-operative localization in PHP. DECT was sensitive and accurate for preoperative localization compared to other first-line imaging techniques.

      Graphical abstract

      Keywords

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