[Endoscopy of the eustachian tube. 1st evaluation].

The authors present a novel, original method for exploration of the middle ear cavity using Eustachian tube endoscopy. The diameter of the fibre optic tube was only 0.9 mm, hence the term micro-endoscopy. This endoscopic procedure was used during surgery for chronic otitis, where there was evidence of tubal etiology which required confirmation. The preliminary results are presented.