[HTML][HTML] Localization of parathyroid adenomas using 11C-methionine pet after prior inconclusive imaging
ME Noltes, AM Coester… - … Archives of Surgery, 2017 - Springer
ME Noltes, AM Coester, ANA van der Horst-Schrivers, B Dorgelo, L Jansen, W Noordzij…
Langenbeck's Archives of Surgery, 2017•SpringerPurpose Minimally invasive parathyroidectomy (MIP) is the recommended treatment in
primary hyperparathyroidism (pHPT) for which accurate preoperative localization is
essential. The current imaging standard consists of cervical ultrasonography (cUS) and MIBI-
SPECT/CT. 11 C-MET PET/CT has a higher resolution than MIBI-SPECT/CT. The aim of this
study was to determine the diagnostic performance of 11 C-MET PET/CT after initial
inconclusive or negative localization. Methods We performed a retrospective single center …
primary hyperparathyroidism (pHPT) for which accurate preoperative localization is
essential. The current imaging standard consists of cervical ultrasonography (cUS) and MIBI-
SPECT/CT. 11 C-MET PET/CT has a higher resolution than MIBI-SPECT/CT. The aim of this
study was to determine the diagnostic performance of 11 C-MET PET/CT after initial
inconclusive or negative localization. Methods We performed a retrospective single center …
Purpose
Minimally invasive parathyroidectomy (MIP) is the recommended treatment in primary hyperparathyroidism (pHPT) for which accurate preoperative localization is essential. The current imaging standard consists of cervical ultrasonography (cUS) and MIBI-SPECT/CT. 11C-MET PET/CT has a higher resolution than MIBI-SPECT/CT. The aim of this study was to determine the diagnostic performance of 11C-MET PET/CT after initial inconclusive or negative localization.
Methods
We performed a retrospective single center cohort study of patients with pHPT undergoing parathyroid surgery after prior negative imaging and later localization by means of 11C-MET PET/CT between 2006 and 2014. Preoperative localization by 11C-MET PET/CT was compared with later surgical localization, intraoperative quick PTH (IOPTH), duration of surgery, histopathology, and follow-up data. Also, differences in duration of surgery between the groups with and without correct preoperative localization were analyzed.
Results
In 18/28 included patients a positive 11C-MET-PET/CT result corresponded to the surgical localized adenoma (64%). In 3/28 patients imaging was false positive and no adenoma was found. In 7/28 patients imaging was false negative at the side of the surgically identified adenoma. Sensitivity of 11C-MET PET/CT was 72% (18/25). Duration of surgery of correctly localized patients was significantly shorter compared to falsely negative localized patients (p = 0.045).
Conclusion
In an intention to treat 11C-MET-PET/CT correctly localized the parathyroid adenoma in 18/28 (64%) patients, after previous negative imaging. A preoperatively correct localized adenoma leads to a more focused surgical approach (MIP) potentially reducing duration of surgery and potentially healthcare costs.
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