The uncommon combination of common variable immunodeficiency, macrophage activation syndrome, and cytomegalovirus retinitis.

Common variable immunodeficiency (CVID) is a heterogeneous group of disorders with varied immunologic phenotypes and clinical manifestations. Patients with CVID are mainly characterized by decreased serum immunoglobulin levels, and increased susceptibility to recurrent bacterial infections, autoimmune disorders, and malignancies. Here we present a CVID patient who has developed a clinical polyclonal lymphocytic infiltration phenotype associated with severe and irreversible pancytopenia with unknown etiology. Progressive unilateral loss of vision and cytomegalovirus retinitis indicated the cause of patient's pancytopenia.