DiGeorge's syndrome is due to___________?
Correct answer: B. Congenital thymic aplasia
- A. Deficiency of complement factor
- B. Congenital thymic aplasia
- C. Inborn error of metabolism
- D. Chromosomal anomaly
Explanation
DiGeorge syndrome classically involves failure of thymic development, causing T-cell deficiency and often hypocalcaemia from parathyroid defects. A 22q11 deletion is a common cause, but congenital thymic aplasia is the defining lesion listed here.
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