[Hereditary angioedema due to C1-esterase inhibitor deficiency].

The paper presents a case of family oedema by shortage of C1-esterase inhibitor, characterized by appearance at an early age (8 months), participation in some attacks of nasal mucous membrane, with nasal obstruction and sinusal manifestations and also the abnormally long period, up to 9 days, of some localized oedemas. The crises were absent during pregnancy. The study of four generations of the family showed the predominantly hereditary character of the genetic transmission. Two cases in which the disease apparently "overleapt" a generation, as clinical manifestations, were presented.