[Subdural empyema induced by frontal sinusitis].

Nowadays the complications arising from sinusitis are rare. However its seriousness can even cause death. Intracranial complications are much more uncommon than the orbital ones. However, slight symptoms can appear, which may disjunct the correlation between clinical-radiology and the severity of the infection. The diagnosis is fundamentally based on the TAC, and early treatment with intravenous anti-biotherapy should be implemented, being followed by drainage surgery of the sinus and empyema. We have presented a case which evolved favourably and revised all the literature pertaining to it.