RT Journal Article SR Electronic T1 Neurilemmoma of the anterior ethmoidal nerve encroaching upon the nasolacrimal duct. JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 750 OP 752 DO 10.1136/bjo.76.12.750 VO 76 IS 12 A1 Leib, M. L. A1 Chynn, E. W. A1 Michalos, P. A1 Schubert, H. D. A1 Leib, E. J. YR 1992 UL http://bjo.bmj.com/content/76/12/750.abstract AB The clinical, light microscopic, ultrastructural, and immunohistologic findings of a neurilemmoma encroaching upon the nasolacrimal duct are presented. This is the first reported case of this rare tumour of the nasolacrimal duct where the diagnosis has been confirmed by electron microscopy and immunohistochemical techniques.