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Tuberculosis complicating tertiary hyperparathyroidism in a patient with end-stage renal disease: a case report
Hazim M Sadideen1, Paul Blaker, Patrick O'Donnell
1Department of Nephrology and Transplantation, Guy's Hospital, Guy's and St. Thomas' NHS Trust, London, UK.
Abstract:
A 36-year-old Nigerian woman on thrice-weekly dialysis presented with symptoms and signs of hypercalcaemia. Laboratory findings were consistent with tertiary hyperparathyroidism. Parathyroid hormone levels remained elevated and she underwent elective parathyroidectomy. Intra-operatively all 4 parathyroid glands and local lymph nodes showed necrotising granulomas with occasional acid-fast bacilli, pathognomonic of tuberculosis (TB). Post-operatively she completed a full course of anti-TB therapy and at 9 months she experienced complete resolution in her plasma biochemistry and was essentially symptom-free. This is a rare yet fascinating cause of hypercalcaemia in a dialysis patient and is the first recorded case of tubercular involvement of parathyroid tissue in a case of tertiary hyperparathyroidism. This report demonstrates the coexistence of 2 diseases that simultaneously worsened hypercalcaemia and thus emphasises the importance of the differential diagnosis and of careful histological examination post-operation.
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