[Delay in diagnosis of common variable immunodeficiency: a paradigmatic case report].

This case report highlights the frequent delay in diagnosis of common variable immunodeficiency. The patient, 84 years old, had over 30 years of recurrent infections. At the first visit serum IgG were less than 134 mg/dl. From the review of previous examinations strong hypogammaglobulinemia was present for over 14 years.