Data of 124 patients with primary immunodeficiencies were examined in a retrospective study in respect of incidence and severity of bronchopulmonary immunodeficiencies. Relapsing pneumonias were seen in 40 patients (32.3%) and bronchiectases in 15 cases (12.1%). Children with severe antibody deficiencies or combined immunodeficiencies were involved particularly often. Avoidance of pulmonary complications is of special prognostic importance with these patients.