Background Common variable immunodeficiency (CVID) is one of the most common primary immunodeficiency in adults and is characterized by defective antibody production, low levels of serum immunoglobulins and increased susceptibility to infection. About 20% of developed different gastrointestinal pathology. But also the pathology of the gastrointestinal tract in patients with CVID showed a wide s...

Introduction The CVI is the second most common primary immunodeficiency. The prevalence of CIV in the world is approximately 1:25,000. The age of presentation of ICV has peaks in the first decade if life and the beginning of the third decade. Both sexes are affected. Diagnostic criteria according to ESID/PAGID are: recurrent infections; -age more 4 years; -reduced levels of IgG; decrease of IgA...

Common variable immunodeficiency (CVID) is a rare immune deficiency characterized by low levels of serum IgG, IgA, and/or IgM, with a loss of Ab production. The diagnosis is most commonly made in adults between the ages of 20 and 40 years, but both children and much older adults can be found to have this immune defect. The range of clinical manifestations is broad, including acute and chronic i...

Common variable immunodeficiency (CVID) is an immunodeficiency disorder with a high incidence of gastrointestinal (GI) manifestations and an increased risk of gastric malignancy. We report a case of a CVID with mild anemia presenting with multiple GI manifestations: gastric low-grade dysplasia (LGD), enteropathy with villous atrophy, refractory Giardia infection, nodular lymphoid hyperplasia, a...

CD4+ T follicular helper cells (TFH) were assessed in adult patients with common variable immune deficiency (CVID) classified according to the presence of granulomatous disease (GD), autoimmunity (AI), or both GD and AI (Group I) or the absence of AI and GD (Group II). TFH lymphocytes were characterized by expression of CXCR5 and PD-1. TFH were higher (in both absolute number and percentage) in...

Introduction Cryptococcus neoformans is an encapsulated yeast fi rst isolated by Busse in 1894 from the tibia of a 31-year-old woman [1]. Lungs are considered the initial site of almost all cryptoccocal infections, and the second clinically more relevant after central nervous system. The pattern of pulmonary disease is extremely variable, ranging from asymptomatic saprophytic airway colonizatio...

1. Department of Laboratory Medicine, Imam Hassan Mojtaba Hospital, Alborz University of Medical Sciences, Karaj, Iran 2. Research Center for Immunodeficiencies, Children’s Medical Center, Tehran University of Medical Sciences, Tehran, Iran 3. Primary Immunodeficiency Diseases Network (PIDNet), Universal Scientific Education and Research Network (USERN), Tehran, Iran 4. Department of Immunology...