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ORIGINAL ARTICLE
Year : 2014  |  Volume : 18  |  Issue : 2  |  Page : 210-212

Intraoperative parathyroid hormone assay-cutting the Gordian knot


1 Department of Histopathology, Lilavati Hospital and Research Center, Bandra, Mumbai, India
2 Department of Pathology, Lilavati Hospital and Research Center, Bandra, Mumbai, India
3 Department of Oncosurgery, Lilavati Hospital and Research Center, Bandra, Mumbai, India

Correspondence Address:
Chandralekha Tampi
Department of Histopathology, Lilavati Hospital and Research Center, Bandra (W), Mumbai - 400 055
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/2230-8210.129113

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Background: Hyperparathyroidism is treated by surgical excision of the hyperfunctioning parathyroid gland. In case of adenoma the single abnormal gland is removed, while in hyperplasias, a subtotal excision, that is, three-and-a-half of the four glands are removed. This therapeutic decision is made intraoperatively through frozen section evaluation and is sometimes problematic, due to a histological overlap between hyperplasia and the adenoma. The intraoperative parathyroid hormone (IOPTH) assay, propogated in recent years, offers an elegant solution, with a high success rate, due to its ability to identify the removal of all hyperfunctioning parathyroid tissue. Aim: To study the feasibility of using IOPTH in our setting. Materials and Methods: Seven patients undergoing surgery for primary hyperparathyroidism had their IOPTH levels evaluated, along with the routine frozen and paraffin sections. Results: All seven patients showed more than a 50% intraoperative fall in serum PTH after excision of the abnormal gland. This was indicative of an adenoma and was confirmed by histopathological examination and normalization of serum calcium postoperatively. Conclusion: The intraoperative parathyroid hormone is a sensitive and specific guide to a complete removal of the abnormal parathyroid tissue. It can be incorporated without difficulty as an intraoperative guide and is superior to frozen section diagnosis in parathyroid surgery.


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