Toxoplasmosis in a patient with common variable immunodeficiency.

We describe here a case of common variable immunodeficiency with depression of both humoral and cellular immunity, manifested primarily by chronic toxoplasmosis. The presence of a lymphoma as the underlying etiology of the immunodeficiency was excluded. The clinical, histological, and immunological interrelations between immunodeficiency, toxoplasmosis and lymphoma are discussed.