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Review Question - QID 212484

Common Variable Immunodeficiency Disorder (CVID) Presentation Symptoms QID: 212484 (M1.OMB.18.4696)
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QID 212484 (Type "212484" in App Search)
A 24-year-old woman comes to the clinic complaining of headache and sinus drainage for the past 13 days. She reports cold-like symptoms 2 weeks ago that progressively got worse. The patient endorses subjective fever, congestion, sinus headache, cough, and chills. She claims that this is her 5th episode within the past year and is concerned if “there’s something else going on.” Her medical history is significant for asthma that is adequately controlled with her albuterol inhaler. Her laboratory findings are shown below:

Serum:
Hemoglobin: 16.2 g/dL
Hematocrit: 39 %
Leukocyte count: 7,890/mm^3 with normal differential
Platelet count: 200,000/mm^3
IgA: 54 mg/dL (Normal: 76-390 mg/dL)
IgE: 0 IU/mL (Normal: 0-380 IU/mL)
IgG: 470 mg/dL (Normal: 650-1500 mg/dL)
IgM: 29 mg/dL (Normal: 40-345 mg/dL)

What is the most likely diagnosis?
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