Clinical value of 11C-methionine positron emission tomography in persistent primary hyperparathyroidism-A case report with a mediastinal parathyroid adenoma

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  • Marie Louise Møller, Øre-Næse-Halsafdeling H, Institut for Klinisk Medicin
  • ,
  • L Rejnmark
  • A K Arveschoug
  • ,
  • Annette Højsgaard, Institut for Klinisk Medicin - Hjerte-, Lunge- og Karkirurgi, Danmark
  • L Rolighed

INTRODUCTION: Primary hyperparathyroidism (PHPT) is a common endocrine disorder caused by pathologic growth of one or more of the parathyroid glands. Parathyroidectomies (PTX) in patients with PHPT are procedures with low morbidity, few complications, and a high cure rate. However, the parathyroid glands may be found at various anatomical locations and occasionally they are intrathoracic.

CASE PRESENTATION: We present a 57-year-old patient with PHPT. Before the first and second operation, the preoperative imaging indicated pathologic parathyroid tissue in the neck. Due to postoperative persistent hypercalcemia we performed a 11C-methionine positron emission tomography (11C-MET-PET/CT). The scan showed a focus with increased activity in the mediastinum. Due to persistent disease, an ectopic parathyroid gland in the mediastinum was suspected. At a third operation, the parathyroid adenoma was resected through an anterolateral thoracotomy. Biochemical values normalized and bone mineral density improved postoperatively. Hence, an ectopic localization of a parathyroid gland should be considered during the preoperative planning of a PTX, especially in the re-operative setting. A multidisciplinary effort is necessary to address an intrathoracic adenoma.

CONCLUSION: Ectopic parathyroid glands should be suspected when positive sestaMIBI uptake is seen in the mediastinum and other types of imaging (e.g. contrast enhanced CT scan or PET-CT) may confirm the finding of an ectopic parathyroid adenoma. From the present case and previous studies we found 11C-MET-PET/CT valuable in difficult PHPT cases.

OriginalsprogEngelsk
TidsskriftInternational Journal of Surgery Case Reports
Vol/bind45
Sider (fra-til)63-66
Antal sider4
ISSN2210-2612
DOI
StatusUdgivet - 2018

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