PMC9974353_01
Electrocardiogram (ECG) findings on admission (A) and on hospital day 2 (B). (A) An ECG performed on admission shows sinus rhythm with marked QT prolongation (QTc = 0.524 s).. (B) An ECG performed on hospital day 2 shows sinus rhythm with a shortened QT interval (QTc = 0.465 s).. QTc: corrected QT interval
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FIG1
Her ECG revealed QT prolongation (QTc = 0.524 s) (Figure 1A). Her serum Ca level increased to 1.63 mmol/L on day 2, and the QT interval on ECG (QTc) decreased to 0.465 s (Figure 1B).
Head computed tomography performed on admission, showing an absence of calcification of the basal ganglia
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FIG2
Head computed tomography shows no calcification of the basal ganglia (Figure 2).
Genetic testing of the patient. (A) Chromosome analysis showing a normal G-banded chromosome (46,XX).. (B) Fluorescence in situ hybridization showing a lack of deletion or duplication of the domain of 22q11.2 responsible for 22q11.2 deletion syndrome (red with white arrows).
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FIG3
Additional diagnostic tests to exclude DiGeorge syndrome type 1 as the etiology of the patient's hypoparathyroidism showed normal G-banded chromosome analysis findings (46,XX) and no 22q11.2 deletion on fluorescence in situ hybridization screening (Figures 3A, 3B).
Ultrasound image of the thyroid of the patient. (A) Right lobe of the thyroid. (B) Left lobe of the thyroid.. The parathyroid glands were not observed.
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FIG4
There were no destructive lesions of the parathyroid gland on ultrasound (Figures 4A, 4B).