[Empyema due to Moraxella (Branhamella) catarrhalis].

We present a case of empyema by Moraxella (Branhamella) catarrhalis in a patient affected by a bronchogenic epidermoid carcinoma. We describe the basic clinical characteristics of the infection by Moraxella (Branhamella) catarrhalis and we confirm the low incidence of empyema by such germ.