A 2-Week-Old Girl Is Evaluated by a Specialist Because Her

A 2-week-old girl is evaluated by a specialist because her physical appearance is abnormal.She has been hospitalized since birth.(Normal values are given in parentheses.) Her CD3 level is reported as 15% (60-80%) ,CD4 = 10% (30-65%) ,CD8 = 5% (10-40%) ,and CD19 = 84% (5-20%) .Serum immunoglobulin levels are normal.Karyotyping reveals a deletion on chromosome 22.This girl has:

A) Bruton's hypogammaglobulinemia
B) Wiskott-Aldrich syndrome
C) DiGeorge syndrome
D) ataxia telangiectasia

Correct Answer:

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