Ali, M.Murphy, J.Wormald, P.Psaltis, A.2015-08-202015-08-202015Journal of Laryngology and Otology, 2015; 129(Suppl. 3):S35-S400022-21511748-5460http://hdl.handle.net/2440/93758Published online: 08 April 2015OBJECTIVES: To analyse the radiological features of the bony nasolacrimal duct before and after functional endoscopic sinus surgery, and document the incidence of surgically induced dehiscence. METHODS: A retrospective case series analysis was conducted of 63 consecutive patients who underwent uncinectomy as a part of 118 functional endoscopic sinus surgical procedures. All patients underwent pre- and post-operative computed tomography scans. Axial computed tomography images at the level of maxillary sinus were evaluated for the presence of bony nasolacrimal duct dehiscence, osteitis and completeness of uncinectomy. RESULTS: The rate of nasolacrimal duct dehiscence prior to surgery was 6.8 per cent (8 out of 118 cases). Nasolacrimal duct dehiscence as a consequence of surgery was observed in 3.3 per cent of cases (4 out of 118), with a further 4.2 per cent (5 out of 118) showing post-operative reactive bony change of the nasolacrimal duct in the absence of dehiscence. CONCLUSION: The incidence of nasolacrimal duct injury observed was much lower than that previously reported in the literature.en© JLO (1984) Limited 2015Nasolacrimal DuctSinus SurgeryFESSComplicationsDehiscenceSurgical WoundCT ScanX-RayLund-Mackay ScoresJournal article003002764810.1017/s00222151150007780003645068000072-s2.0-84938780229182768Wormald, P. [0000-0001-7753-7277]Psaltis, A. [0000-0003-2197-0797] [0000-0003-2967-1855]