Chronic Diarrhea as a Presenting Manifestation of Common Variable Immunodeficiency

AUTHORS

Amir Hossein Hosseini 1 , Mehrnaz Mesdaghi 2 , * , Ali Akbar Sayyari 2 , Zahra Chavoshzadeh 3

1 Shohadaye Tajrish Hospital, Shahid Beheshti University of Medical Science, Tehran, IR Iran

2 Mofid Children’s Hospital, Shahid Beheshti University of Medical Sciences, Tehran, IR Iran

3 Pediatric Infections Research Center, Shahid Beheshti University of Medical Sciences, Tehran, IR Iran

How to Cite: Hosseini A H, Mesdaghi M, Sayyari A A, Chavoshzadeh Z. Chronic Diarrhea as a Presenting Manifestation of Common Variable Immunodeficiency, Arch Pediatr Infect Dis. 2014 ; 2(1):180-182. doi: 10.5812/pedinfect.12295.

ARTICLE INFORMATION

Archives of Pediatric Infectious Diseases: 2 (1); 180-182
Published Online: January 7, 2014
Article Type: Case Report
Received: May 18, 2013
Revised: June 20, 2013
Accepted: July 4, 2013
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Abstract

Common variable immunodeficiency (CVID) is one of the primary immunodeficiencies, which usually presents with recurrent bacterial infections, particularly in respiratory and gastrointestinal systems and hypogammaglobulinemia. We present here a case of CVID who was suffering from chronic watery diarrhea since 3 months before admission. Past medical history was uneventful about recurrent infections. No abnormality was revealed on physical examination. After thorough investigations about other possible causes of chronic diarrhea, and based on laboratory data of hypogammaglobuliemia, we considered him as a case of CVID with an isolated manifestation.

Keywords

Common Variable Immunodeficiency Diarrhea T cell immunodeficiency Primary

Copyright © 2014, Pediartric Infections Research Center. This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/) which permits copy and redistribute the material just in noncommercial usages, provided the original work is properly cited.

1. Introduction

Common variable immunodeficiency (CVID) is one of the prevalent primary immunodeficiencies, with heterogeneous manifestations, mostly reduction in immunoglobulin levels and recurrent bacterial infections. We present here a case of CVID with the rare presentation of chronic non-infectious diarrhea, without concomitant recurrent infections.

2. Case

This 3-year-old boy was admitted to our tertiary pediatric hospital due to a history of 3 months refractory watery diarrhea. One-kilogram weight loss, since beginning of the current illness was detected. His parents were not relatives. His past medical history about growth and development was acceptable and he was not suffering from chronic or recurrent infections (e.g. draining otitis media, refractory sinusitis, pneumonia, etc.). According to national immunization program, his vaccination history was complete and uneventful. On physical examination, he was ill but not toxic and his vital signs were in normal range for his age. Growth indices were not affected, except weight for age that was below 10th percentile. Examination of buccal cavity revealed mild thrush. Tonsils were visible. No lymphadenopathy or hepatosplenomegaly was detected. Other physical examinations were normal. In laboratory data, complete blood count and biochemistry showed normal parameters. Erythrocyte sedimentation rate was reported 34 mm/h. Stool examination showed the presence of undigested material and fat; with pH 5.5, but ova, cyst or trophozoites was not seen. Stool culture was negative. Tuberculin skin test showed 3 millimeters induration. Sweat chloride test was normal. The child was seronegative for HIV, HBsAg, and HCV, and HIV PCR was reported negative twice. Serum protein electrophoresis showed a normal protein analysis, except reduction of gamma globulins. Autoimmune markers were checked and all of them were within normal range. Evaluation for immunodeficiency disorders showed very low levels of IgA, IgM, and IgG (Table 1). Anti-tetanus and anti-diphtheria IgG were measured and they were 0.006 and 0.003 IU/mL, respectively (< 0.1 is considered non responsive). His blood typing showed O-blood group and his isohemmaglutinin titers were less than 1/4. The results of flow cytometric lymphocyte subsets analysis are shown in (Table 2). Dihydrorudamine (DHR) test was not in favor of chronic granulomatous disease. Colonoscopy and tissue biopsy were done that showed non-specific colitis. Finally, the CVID was established according to the European society for immunodeficiencies diagnostic criteria (1). He was treated with intravenous antibiotics and intravenous immunoglobulin infusions. Diarrhea was stopped and an acceptable weight gain was achieved after starting intravenous immunoglobulin administration.

Table 1. Nephelometric Immunoglobin Analysis Report
ImmunoglobulinPatientNormal Ranges
IgG 0.149 0.5-13 g/L
IgM Non-detectable 0.34–2.55 g/L
IgE 0.1 Up to 68 IU/mL
Ig A Non-detectable 0.19-2.2 g/L
Table 2. Flow Cytometric Lymphocyte Subset Analyses, Cell Count and Subpopulations
Cell Count and SubpopulationResult
White Blood cell Count8800/mm3
Neutrophil40%
Lymphocyte53%
CD3 80.5%
CD410.9%
CD861.3%
CD568.9 %
CD199.9%
CD4/CD80.18

3. Discussion

CVID is a diverse group of disorders, which arise from B and T lymphocytes dysfunctions and results in hypogammaglobulinemia (2). CVID has been defined clinically by the presence of recurrent infections and a reduction in IgG (at least 2 SD below the mean), and at least one other immunoglobulin isotypes, as well as by a failure to mount a significant specific antibody response to challenge with vaccination or natural infections (1, 3). CVID usually presents with recurrent sinopulmonary bacterial infections as a result of poor antibody responses and decreased serum immunoglobulins. Infections of the lower respiratory tracts (recurrent pneumonia) often result in bronchiectasis (4). Recurrent respiratory infections affect up to 98% of CVID patients (5). Gastrointestinal manifestations are the presenting symptom of CVID in about 3% of the patients (6). Totally, the gastrointestinal tract is affected in about half of the CVID patients. The major gastrointestinal manifestations of CVID are transient or persistent diarrhea, reported in 21-57% of subjects. Other intestinal presentations include intestinal malabsorbtion, chronic giardiasis and amebiasis, and atrophic gastritis with pernicious anemia. About 20% of patients with CVID have gut symptoms without an infectious cause (5-9). Although gastrointestinal manifestations are common findings in CVID, they are rare presenting signs and symptoms (as the first presentation) in CVID, especially without concomitant respiratory and gastrointestinal infections. Similarly, in our patient gut infection was never documented on repeated stool examinations and he had never experienced respiratory infections or any other recurrent infections before diagnosis. Actually, chronic non-infectious diarrhea was the single manifestation of CVID in this patient, which is a really rare presentation of CVID. Pater et al. have also recently reported a case of CVID with the rare presentation of chronic diarrhea. They also couldn’t find an infectious origin for his diarrhea, but different from our report, their patient had also previous recurrent infections (10). Another report by Onbasi et al., discusses a 39-year-old patient with CVID, presenting with chronic diarrhea, but giardiasis was found to be the reason of diarrhea. She was also suffering from recurrent infections since childhood (11).

In a study by Aghamohammadi et al. (9), infection, super infection, ulcerative colitis, food-sensitive enteropathy, autoimmune enteropathy, and celiac disease are considered the causes of diarrhea and malabsorption manifestation in these patients.

It is important to consider hypogammaglobulinemia in any patient with a history of chronic diarrhea and patients should undergo a full assessment of immune system including measurement of serum immunoglobulin levels, antibody function evaluation, and B and T-cell subsets enumeration.

The mainstays of treatment for CVID remain replacement immunoglobulin (Ig) and antibiotics for infections and appropriate treatment for the non-infectious complications (7, 9).

Acknowledgements

Footnotes

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