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Case Reports
. 2013 Jun 21:2013:bcr2012008290.
doi: 10.1136/bcr-2012-008290.

Hyperparathyroidism caused by a functional parathyroid cyst

Kunihiro Suzuki  1 , Ayuko Sakuta, Chie Aoki, Yosimasa Aso
Affiliations
Case Reports

Hyperparathyroidism caused by a functional parathyroid cyst

Kunihiro Suzuki et al. BMJ Case Rep. .

Abstract

A 67-year-old Japanese woman was admitted to our hospital for malaise and loss of appetite. Relevant biochemical examinations showed definite hypercalcaemia and elevated serum levels of intact parathyroid hormone (PTH). We performed thyroid ultrasonography and CT of the neck, which revealed a cystic lesion in the right lower lobe of the thyroid glands. Ultrasound-guided fine-needle aspiration was performed, and PTH level of the cystic fluid was markedly elevated. Technetium-99m-hexakis 2-methoxyisobutyi isonitrile sesta scintigraphy showed intense ring-shaped accumulation of radioactivity in the wall of the cyst. The patient underwent a right lobectomy to resect the cystic parathyroid adenoma. After surgery, her serum calcium and PTH level returned to normal ranges.

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Figures

Figure 1
Figure 1
(A) Thyroid ultrasonography showing a cystic parathyroid adenoma. (B) CT scan of the neck showing a cystic parathyroid adenoma. (C) Technetium-99m-hexakis 2-methoxyisobutyi isonitrile sesta showing intense marginal uptake in the right inferior side of the thyroid gland (arrow).
Figure 2
Figure 2
(A) Histological aspect H&E staining. (B) Showing the chief cells of parathyroid gland with infiltration of eosinophilic cells.
See this image and copyright information in PMC

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