Does anyone know what is empyema plus bronchitis?

A continuum. Empyema is a severe infection in the chest in which pus accumulates within the pleural space. Also known as pleural empyema, empyema thoracis and pyothorax. It will often develop as a consequence of a pneumonia. A fluid collection forms (parapneumonic effusion) and this fluid becomes infected. The treatment is to drain the pus, re-expand lung, and treat underlying infection.
Infection... Empyema is when there is pus in the space surrounding the lung. Acute bronchitis is due to an infection of the airways. It can be due to bacteria or virus. Empyema often needs to be drained as well as treated with antibiotics. It is a serious infection.