RARE AND DEMANDING: PARATHYROID ADENOMA LOCALIZATION, SURGERY AND OUTCOME.
Annals of the College of Medicine, Mosul,
2020, Volume 42, Issue 2, Pages 199-206
Objectives: To assess the methods of preoperative parathyroid adenoma localization and to compare it with operative findings.
Patients and methods: Between June 2017 and June 2019, we had operated 8 cases of parathyroid adenomas. Three patients were males and 5 patients were females. Age ranged from 26 year old to 72 year old with average of 42 year old. Seven cases were sporadic while one case was part of MEN2a. All patients had ultrasonography for preoperative localization, all had CT scan and 4 patients had Sestamibi scan. In all patients, intraoperative measurements of parathyroid hormone was done before and 10 minutes after surgical excision.
Results: Ultrasonography was successful in localizing only one case with certainty. CT scan located the adenoma in another 2 patients. In 4 patients who performed Sestamibi scan, the adenomas were located precisely in all of them including one case of ectopic parathyroid adenoma behind the sternum. In one patient, all the modalities failed in localization which was achieved easily intraoperatively. Single adenoma was found in 6 patients and two adenomas in two patients. The adenomas were located in the neck in 7 patients and in the anterior mediastinum in one patient .Surgical removal was done through neck incision in 7 cases while midline sternotomy in one case. All the patients had resolution of symptoms within the follow up period.
Conclusion: Sestamibi scan is the best investigation in preoperative localization of parathyroid adenoma. Ultrasonography and CT scan can aid in the diagnosis with less sensitivity. Intraoperative localization is possible even in cases of negative investigations.
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