[Hazards and complications of ethmoidal surgery].

The most important publications concerning the complications following transnasal ethmoid surgery are reviewed by the authors who underline the dangers in this type of surgery: meninges, the orbit and orbital elements especially the muscles, the extra-orbital portion of the optic nerve and the internal carotid artery. A great prudence during surgical procedure is emphasized as well as the necessity of a perfect knowledge in scannographic and endoscopic anatomy of ethmoid to avoid the inflation of these complications.