| Summary: | Ectopically located parathyroid adenoma is one of the major causes of persistent and recurrent hyperparathyroidism and hypercalcemia. Approximately 0.3–8% of parathyroid adenoma is found in an ectopic location. Ectopic parathyroid adenomas are uncommon causes of persistent hypercalcemia and can be present at uncommon locations, including the hypoglossal nerve, the posterior triangle of the neck, axilla, and pericardium 3. A high index of suspicion is warranted when we see persistently elevated levels of parathyroid hormones (PTHs) and calcium levels post parathyroidectomy. Here, we present a patient who persistently had elevated calcium and PTH levels after parathyroidectomy.
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