Anterior maxillary wall and lacrimal duct relationship - CT analysis for prelacrimal access to the maxillary sinus
| Autor: | Nick Jones, N Veerasigamani, D Simmen, B Schuknecht, Hans Rudolf Briner |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Nasolacrimal duct
Maxillary sinus Lacrimal duct Adult patients business.industry Anterior wall Ct analysis Lacrimal Apparatus General Medicine Anatomy Maxillary Sinus Lacrimal sac Surgical access 03 medical and health sciences 0302 clinical medicine medicine.anatomical_structure Otorhinolaryngology 030220 oncology & carcinogenesis otorhinolaryngologic diseases medicine Humans 030223 otorhinolaryngology business Tomography X-Ray Computed Retrospective Studies |
| Zdroj: | Rhinology. 55(2) |
| ISSN: | 0300-0729 |
| Popis: | Background: The distance between the anterior wall of the maxillary sinus and the nasolacrimal duct shows a large individual variation. Methodology: To evaluate the feasibility of accessing the maxillary sinus through a prelacrimal window access (PLWA), a series of 100 paranasal CT scans from adult patients was analysed retrospectively. The distance between the anterior maxillary wall and the anterior border of the lacrimal duct (= prelacrimal window) were measured in 200 sides. Results: A distance of more the 7 mm was found in 12.5% maxillary sinuses and would enable straight forward PLWA. A distance between smaller than 7mm and larger than 3mm was present in 56.5% of sinuses, and would make surgical access more demanding. In 31.5% of maxillary sinuses the distance was smaller than or equal to 3mm and in these patients this approach would be difficult without transecting the nasolacrimal duct. Conclusion: Only in 12.5% of sinuses a prelacrimal endoscopic access is readily feasible, while in 56.5% temporary tear sac dislocation is required and in 31.5% lacrimal sac dislocation is always needed along with a significant amount of bone removal to enable PLWA. |
| Databáze: | OpenAIRE |
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