Reversible dilated cardiomyopathy caused by primary hyperparathyroidism: A case report

Table 1 Clinical information for the patient in this report

	The first hospitalization before PTX (January 2020)	The second hospitalization before PTX (July 2021)	After PTX (May 2023)
Left ventricular ejection fraction (%)	13	22	53
Left ventricular end-diastolic diameter (mm)	65	65	47
Right ventricle (mm)	29	26	20
Left atrium (mm)	42	44	36
Right atrium (mm)	53 × 49	52 × 44	44 × 37
Parathyroid hormone (pg/mL)	206	284	56.4
Brain natriuretic peptide (pg/mL)	2555.5	2583.9
Corrected calcium(mmol/L)	2.85	2.78	2.44
Phosphate (mmol/L)	1.17	0.95
Creatinine (μmol/L)	160.7	210.4	171.2
Estimated glomerular filtration rate (mL/minute)	42.4	30.2	38.2

PTX: Parathyroidectomy.

Table 2 Clinical features of the present patient and the two patients already reported in the literature

	Age and gender	Clinical characteristics	Serum calcium (mmol/L)	Treatment of primary hyperparathyroidism	Pathologic diagnosis	Postoperative efficacy
Our patient	52-year-old male	Dyspnea, fatigue, anorexia and abdominal distention	2.78-3.03	Surgery	Parathyroid adenoma	Improvement of cardiac function
Koch et al[4]	55-year-old male	Dyspnea, diarrhea and arrhythmia	3.0-3.2	Surgery	Parathyroid adenoma	Improvement of cardiac function and arrhythmia decreased
Kiernan et al[5]	65-year-old female	Cardiogenic shock, dyspnea, anorexia, nausea and fatigue	3.2	-	-	-