Abstract
Background
Precise preoperative localization is essential for focussed parathyroidectomy. The imaging standard consists of cervical ultrasonography (cUS) and 99mTc-MIBI-SPECT (MIBI-SPECT). 11C-methionine positron emission tomography/computed tomography (Met-PET/CT) is a promising method for localizing parathyroid adenomas. The objective of our study was to elucidate whether additional Met-PET/CT increases the rate of focussed parathyroidectomy.
Methods
Fourteen patients with primary hyperparathyroidism (HPT) and three patients with tertiary HPT underwent cUS and MIBI-SPECT. Met-PET/CT was carried out in patients with negative MIBI results. Subsequent surgical strategy was adapted according to imaging results.
Results
cUS localized a single parathyroid adenoma in 10/17 patients (59 %), while MIBI-SPECT/CT identified 11/17 single adenomas (65 %). In the remaining six patients, Met-PET/CT identified five single adenomas. This step-up approach correctly identified single adenomas in 16/17 patients (94 %).
Conclusion
Met-PET/CT raises the rate of correctly localized single parathyroid adenomas in patients with negative cUS and MIBI-SPECT/CT and increases the number of focussed surgical approaches.
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Abbreviations
- cUS:
-
Cervical ultrasound
- MIBI:
-
Methoxy-isobutyl-isonitrile
- MIBI-SPECT/CT:
-
Tc-99m sestamibi (MIBI)-scintigraphy with SPECT/CT
- Met-PET/CT:
-
11C-methionine positron emission tomography/computed tomography
- MIVAP:
-
Minimally video-assisted parathyroidectomy
- OMIP:
-
Open minimally video-assisted parathyroidectomy
- pHPT:
-
Primary hyperparathyroidism
- sHPT:
-
Secondary hyperparathyroidism
- tHPT:
-
Tertiary hyperparathyroidism
- iPTH:
-
Intraoperative parathyroid hormone assay
- R:
-
Right
- L:
-
Left
- N/A:
-
Not analyzed
- n.d.:
-
No correct detection
- TH:
-
Thoracic vertebra
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Lenschow, C., Gassmann, P., Wenning, C. et al. Preoperative 11C-Methionine PET/CT Enables Focussed Parathyroidectomy in MIBI-SPECT Negative Parathyroid Adenoma. World J Surg 39, 1750–1757 (2015). https://doi.org/10.1007/s00268-015-2992-x
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DOI: https://doi.org/10.1007/s00268-015-2992-x