title: Spectrum of illness in pediatric common variable immunodeficiency.
abstract: BACKGROUND
  Common variable immunodeficiency (CVID) may present at any age but usually presents during adulthood.
  
  
  OBJECTIVE
  To study the presentation and associated medical conditions found in pediatric patients with CVID.
  
  
  METHODS
  A medical record review of patients diagnosed as having CVID before the age of 18 years was performed at a tertiary care immunology clinic from 1992 to 2005. Inclusion criteria consisted of presentation with recurrent infections and decrease in 2 of 3 immunoglobulin isotypes (IgG, IgA, IgM) 2 SDs below the age-specific range, with a poor or absent response to immunization. There had to be no other identifiable predisposing cause of the immunodeficiency.
  
  
  RESULTS
  A total of 12 patients were identified. The mean age at presentation was 8 years. All patients had low IgG levels with poor functional antibody responses. The most common presenting infections were sinusitis (75%), otitis media (67%), and pneumonia (58%). Bronchiectasis was seen in 3 children. One patient presented with chronic diarrhea due to Giardia. Two patients presented with failure to thrive. Asthma was seen in 10 patients (83%) but was usually diagnosed after the initial presentation. Autoimmune disorders were seen, including 1 patient with idiopathic thrombocytopenia and 2 with neutropenia. Other disorders encountered were growth hormone deficiency, hypothyroidism, end-stage renal disease, and sarcoma.
  
  
  CONCLUSIONS
  CVID is a difficult diagnosis in the pediatric population because of an unpredictable presentation. Autoimmune disease, growth hormone deficiency, renal disease, and cancer were noted in our population. A high incidence of asthma also may be associated with pediatric CVID.
authors.affiliation: Section of Allergy and Immunology, Department of Pediatrics, West Virginia University School of Medicine, Morgantown, West Virginia 26506-9214, USA.
authors.forename: Paul R
authors.initials: PR
authors.lastname: Ogershok
authors.forename: Mary Beth
authors.initials: MB
authors.lastname: Hogan
authors.forename: Jon E
authors.initials: JE
authors.lastname: Welch
authors.forename: W Thomas
authors.initials: WT
authors.lastname: Corder
authors.forename: Nevin W
authors.initials: NW
authors.lastname: Wilson
mesh_terms: D000293:Adolescent; D000328:Adult; D001249:Asthma / Q000453:epidemiology; D001327:Autoimmune Diseases / Q000453:epidemiology; D020330:Bell Palsy / Q000453:epidemiology; D002648:Child; D002675:Child, Preschool; D017074:Common Variable Immunodeficiency / Q000097:blood / Q000453:epidemiology*; D003141:Communicable Diseases / Q000453:epidemiology; D015897:Comorbidity; D005260:Female; D013006:Growth Hormone / Q000172:deficiency; D006801:Humans; D007037:Hypothyroidism / Q000453:epidemiology; D007070:Immunoglobulin A / Q000097:blood; D007074:Immunoglobulin G / Q000097:blood; D007075:Immunoglobulin M / Q000097:blood; D007136:Immunoglobulins / Q000097:blood*; D007676:Kidney Failure, Chronic / Q000453:epidemiology; D008297:Male; D009369:Neoplasms / Q000453:epidemiology; D014903:West Virginia / Q000453:epidemiology
chemical_list: D007070:Immunoglobulin A; D007074:Immunoglobulin G; D007075:Immunoglobulin M; D007136:Immunoglobulins; D013006:Growth Hormone