USMLE Step 1

An 8 month-old boy is brought to your office for yet another ear infection. The patient has had a history of thrombocytopenia and eczema. This boy most likely has what?

A) Wiskott-Aldrich syndrome
B) DiGeorge syndrome
C) Severe combined immunodeficiency
D) Job’s syndrome
E) A plasma cell abnormality


check back tomorrow for your answer.

Yesterday's Answer:
E) aPTT prolonged. Hemophilia A is an x-linked recessive bleeding disorder. aPTT is the only screening test that is abnormal. There is a primary deficiency of Factor VIII.