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Severe Hypercalcemia Caused by Calcium-Alkali Syndrome after 15 Years of Postoperative Hypoparathyroidism in a Patient with Undiagnosed Hyperaldosteronism.
Boufleuer, Natália Diel; Rados, Dimitris V; Zambonato, Tatiana; Maraschin, Clara K; Schaan, Beatriz D.
Afiliación
  • Boufleuer ND; Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2400, Zip Code 90035-903, Porto Alegre, RS, Brazil.
  • Rados DV; Internal Medicine Division, Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2400, Zip Code 90035-903, Porto Alegre, RS, Brazil.
  • Zambonato T; Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2400, Zip Code 90035-903, Porto Alegre, RS, Brazil.
  • Maraschin CK; Internal Medicine Division, Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2400, Zip Code 90035-903, Porto Alegre, RS, Brazil.
  • Schaan BD; Post-Graduate Program in Medical Sciences: Endocrinology, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos 2400, Zip Code 90035-903, Porto Alegre, RS, Brazil.
Case Rep Endocrinol ; 2024: 3067354, 2024.
Article en En | MEDLINE | ID: mdl-38404648
ABSTRACT

Introduction:

The triad of hypercalcemia, metabolic alkalosis, and acute kidney injury associated with ingesting high doses of calcium and absorbable bases characterizes the calcium-alkali syndrome. Clinical Case. We report the case of a patient with postthyroidectomy hypoparathyroidism 15 years ago due to differentiated thyroid cancer who presented with severe hypercalcemia. He had adequate control of calcemia for many years on treatment with calcitriol and calcium carbonate and hypertension treated with amlodipine, losartan, and hydrochlorothiazide. After a period of loss to follow-up, he suddenly presents with severe hypercalcemia, metabolic alkalosis, and loss of renal function. Upon hydration and withdrawal of calcitriol and calcium replacements, hypercalcemia resolved. The etiological investigation identified no granulomatous or neoplastic diseases, but an aldosterone-producing adrenal incidentaloma was found. The cause of hypercalcemia in this patient was calcium-alkali syndrome due to calcium carbonate replacement potentiated by hydrochlorothiazide and primary aldosteronism. Six months after the hospitalization and suspension of calcium and vitamin D, the patient returned to hypocalcemia, reinforcing the diagnosis.

Conclusion:

Although seldom described, the calcium-alkali syndrome is an expected complication for individuals with postoperative hypoparathyroidism, as they require lifelong calcium and vitamin D supplementation. This case also shows the importance of hydrochlorothiazide use and primary aldosteronism as possible triggers of life-threatening hypercalcemia.

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Case Rep Endocrinol Año: 2024 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Estados Unidos

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Case Rep Endocrinol Año: 2024 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Estados Unidos