Fig. 1The CT images of nasal mucosa and bony structure. A) Measurement of nasal mucosal thickness around the bony nasolacrimal duct, classified into anterior, middle, posterior areas. Lines indicate the anterior, middle, and posterior borders of the bony nasolacrimal duct. Uncinate processes located B) anterior and C) posterior to the bony nasolacrimal duct. Arrows indicate an uncinate process.
Fig. 2The images of surgical failure EN-DCR due to ostium closure. A) Arrow indicates granuloma in the ostium. B) Arrow indicates synechiae with nasal mucosa around the ostium.
Fig. 3The graph of mean mucosal thicknesses around lacrimal fossa of all patients. A) Comparison of mucosal thickness around the lacrimal fossa of operated eyes between the successful and failed groups. Only the posterior lacrimal fossa mucosa was significantly different. B) Comparison of mucosal thicknesses around the lacrimal fossa of non-operated eyes between the successful and failed groups. There were no significant differences at any location between the successful and failed groups. C) Comparisons of mucosal thickness of the operated eyes according to location of uncinate processes in the total patient group. D) Comparisons of mucosal thickness of the operated eyes according to location of uncinate processes in the total patient group.
Table 1Patient demographics and final surgery results.
Table 2Mucosal thickness around the lacrimal fossa in operated and non-operated eyes.
Table 3Mucosal thickness of operated eyes according to location of uncinate process in all patients.
Table 4Comparison of mucosal thickness around the lacrimal fossa between operated and non-operated eyes.