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[Common variable immunodeficiency in a patient with suspected sarcoidosis].

Common variable immunodeficiency is a primary immunodeficiency disease, characterized by hypogammaglobulinemia, low serum immunoglobulin concentrations, and recurrent bacterial infections of the respiratory and gastrointestinal tracts. We report on a 33-year-old patient with suspected sarcoidosis, diagnosed on the basis of an open lung biopsy, who was admitted to the National Tuberculosis and Lung Diseases Research Institute because of severe pneumonia and streptococcal sepsis. During diagnostics based on typical, clinical and laboratory features, CVID was diagnosed. The antibiotic treatment was successfully administered and the patient was directed to supplementary treatment.