Gad, M., Khodary, O., Taha, M. (2022). Computed Tomographic (CT) Study of The Pneumatization Pattern of The Maxillary Sinus Prelacrimal Recess and Its Impact on Endoscopic Access. The Egyptian Journal of Hospital Medicine, 89(2), 6541-6544. doi: 10.21608/ejhm.2022.270490
Mohamed Omar A. Gad; Omran Khodary; Mohamed Gaber Taha. "Computed Tomographic (CT) Study of The Pneumatization Pattern of The Maxillary Sinus Prelacrimal Recess and Its Impact on Endoscopic Access". The Egyptian Journal of Hospital Medicine, 89, 2, 2022, 6541-6544. doi: 10.21608/ejhm.2022.270490
Gad, M., Khodary, O., Taha, M. (2022). 'Computed Tomographic (CT) Study of The Pneumatization Pattern of The Maxillary Sinus Prelacrimal Recess and Its Impact on Endoscopic Access', The Egyptian Journal of Hospital Medicine, 89(2), pp. 6541-6544. doi: 10.21608/ejhm.2022.270490
Gad, M., Khodary, O., Taha, M. Computed Tomographic (CT) Study of The Pneumatization Pattern of The Maxillary Sinus Prelacrimal Recess and Its Impact on Endoscopic Access. The Egyptian Journal of Hospital Medicine, 2022; 89(2): 6541-6544. doi: 10.21608/ejhm.2022.270490
Computed Tomographic (CT) Study of The Pneumatization Pattern of The Maxillary Sinus Prelacrimal Recess and Its Impact on Endoscopic Access
Background: The maxillary sinus is the most one vulnerable to lesions. It has a great variation in size, shape, position, and pneumatization, not only in different persons, but also in different sides of the same person. Objective: The aim of this study was to define the pneumatization pattern of the maxillary sinus prelacrimal recessand its impact on endoscopic access. Patients and methods: A series of 99 paranasal CT scans were analyzed retrospectively to define the pattern of pneumatization of the maxillary sinus prelacrimal recess. In a total of 198 maxillary sinus, the distance between the maxillary sinus anterior wall and the anterior margin of the nasolacrimal duct were measured in a millimeter (mm). Results: A total of 99 patients, 54 (55%) were males and 45 (45%) were females with age ranged from 18 – 69 years, with 198 maxillary sinus prelacrimal recess were measured. There are 3 types of pneumatization: Type I (0–3 mm), Type II (> 3–7 mm) and Type III (> 7 mm). In our study we found that type III was found in 24 maxillary sinus (12 %), type II was present in 156 maxillary sinus (79 %) and type I was present in only 18 maxillary sinus (9 %). Conclusion: In 12 % of maxillary sinuses there was a widely pneumatized prelacrimal recess, which allow easy endoscopic access, while in 79 % there was a narrow recess so, temporary lacrimal duct dislocation is required to allow endoscopic access and in 9 % there was a very narrow recess so, lacrimal duct dislocation is always needed with bone removal to enable endoscopic access.