Symptomatic primary hyperparathyroidism is still predominant form in developing countries. Sumit Shukla et al. (2008) Most of these lesions are usually less than 2 cm in diameter with serum calcium levels between 11 to 13 mg/dl. Our case had 3.9×2×1.7 cm non palpable right inferior parathyroid adenoma extending into superior mediastinum, serum calcium 17 mg/dl and vomiting as presenting symptom a case report.
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