Humoral immunodeficiency is suspected in a patient and he is under investigation. Which of the following infections would not be consistent with the diagnosis:: (A) Giardiasis, (B) Pneumocystis carinii pneumonia, (C) Recurrent sinusitis, (D) Recurrent subcutaneous abscesses
Answer is B. Pneumocystis carnii pneumonia is associated with deficient cell-mediated immunity and not with humoral immunodeficiency(ref: Harrison's 18/e p2699)