21. Clinical characteristics and investigations of children with DiGeorge syndrome

Dang Thi Ngoc Lan, Ngo Diem Ngoc, Le Hong Quang, Le Trong Tu, Dang Thi Hai Van

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Abstract

DiGeorge syndrome (DGS), also known as 22q11.2 deletion syndrome, is a common genetic disorder, with diverse clinical manifestations with the classic triads of congenital heart disease, hypocalcemia due to hypoparathyroidism and immunodeficiency due to thymic abnormalities. A retrospective descriptive study of 144 patients diagnosed with Digeorge syndrome by FISH at Vietnam National Children's Hospital from January 2016 to July 2022 showed a median age of diagnosis was 3 months (0 - 14 years old). Male/Female = 1/1. Main Congenital anomalies detected were congenital heart diseases (95.8%), facial abnormalities (31.3%), congenital anomalies of the nervous system (27.7%) and genitourinary abnormalities (18.3%). Other common clinical manifestations included infections (77.1%), seizures (23.6%), growth retardation (50.7%) and developmental disorders (21.5%). The rate of hypocalcaemia was 50%. Hypoparathyroidism occured in 18/33 patients and was a common cause of hypocalcemia. Hematologic disorders included anemia, lymphopenia, and thrombocytopenia. Immunodeficiency was seen in 86.5% of patients.

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References

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