[Pathogenesis of rhinosinusitis and endonasal microsurgery].
The functional microsurgery of the nose has been carried out with help of microscope since 1958 by H. Heermann. The authors described the importance of mucociliary system and lateral nasal wall for pathogenesis and diagnosis of recurring and chronic rhinosinusitis. By the means of nasal endoscopy and polytomography the infection foci can be exactly localised. The list of indications corresponds to our actual concept.