Özet:

Abstract Objective: The distance between the anterior wall of the maxillary sinus and the nasolacrimal canal greatly varies between individuals. The prelacrimal window approach is a promising technique for accessing the lesions of the maxillary sinus anterior wall and floor. In a study conducted with Europeans, Simmen et al. reported that this approach was applicable to only 2/3 of the sample. In another study conducted in China, this approach was feasible for 93% of the cases. The current study aimed to measure the distance between the anterior maxillary wall and the lacrimal duct in a population living in Turkey. Methods:The images of 100 adult patients that underwent paranasal sinus CT for various rhinological diseases were retrospectively reviewed. The distance between the anterior maxillary wall and the anterior border of the lacrimal duct was measured in 200 sides. The measurement methodology previously described by Simmen et al. was used considering that it would allow for a comparison with previous studies undertaken with other ethnic groups. Results:The prelacrimal distance was greater than 7 mm in 10% of the cases and >3-7 mm in 60%. A prelacrimal recess of <3 mm was found in 30% of the patients. Conclusion:We were able to achieve prelacrimal endoscopic access in only 10% of our cases (>7 mm) without removing the bone lacrimal duct, while 60% required temporary tear sac dislocation and 30% required the removal of a significant amount of bone including lacrimal sac dislocation. Keywords: Endoscopic sinus surgery, Prelacrimal approach, Prelacrimal recess, Maxillary sinus, CT

Anahtar Kelimeler: