[Treatment of lacrimal stenosis. Causes, diagnostics, and surgical procedures].

The nasolacrimal system lies in direct proximity to the nasal cavity and the paranasal sinuses. Consequently, different nasal pathologies may influence the lacrimal drainage system. Hence, a standardized rhinological examination using endoscopy and, when indicated, modern imaging is mandatory to clarify malfunctions of lacrimal drainage. This paper describes the different possible causes and the necessary diagnostic tools from an ENT physician's point of view. Furthermore, the results of a series of 48 patients with endoscopic dacryocystorhinostomy performed between 2005 and 2008 were entered into the study. Follow-up examination of these patients showed satisfactory results in 91% and complete reduction of symptoms in 82%. Accompanying surgical procedures were done in 14 patients (septoplasty, infundibulotomy, or reduction of the middle turbinate).