Anatomic characteristics of the lacrimal sac and adjacent bony structures–a computed tomographic-dacryocystography research
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Le résumé fourni par la source
AIM: To describe the anatomic characteristics of the lacrimal sac and its adjacent bone structures and to provide surgical recommendations for endoscopic dacryocystorhinostomy (EN-DCR). METHODS: This retrospective comparative study involved 118 sides with complete nasolacrimal duct obstruction and 83 unaffected sides from 126 patients. Computed tomographic-dacryocystography (CT-DCG) scans were performed before lacrimal surgery, and image reconstruction was used to obtain continuous 0.75-mm axial, coronal, and segmental sections for review. The morphology of the lacrimal sac and its relationship with adjacent bony structures were determined for measurement, as well as the obstructed location. RESULTS: The height of the lacrimal sac was 12.99±2.10 mm in this study. The operculum of the middle turbinate (OMT) was located vertically in the lower third of the lacrimal sac. Horizontally, the junction between the maxillary bone and the lacrimal bone (MB-LB) was close to, mostly (60.2%) posterior to, the lacrimal sac. The uncinate process was more frequently attached to the lacrimal bones (75.1%). The obstructions were generally located around the entrance of the nasolacrimal duct (NLD). However, some were placed higher, with 7.63% blocked not lower than the OMT. There was a negative correlation between the diameter of the lacrimal sac and the level of obstruction (r= -0.35, P<0.01). CONCLUSION: In this study, the OMT and MB-LB can be served as the landmarks in EN-DCR. Partial uncinectomy should be performed in most cases. The obstructions were generally located around the entrance of the NLD, but some extreme individual variations strongly implies the importance of CT-DCG scanning before surgery.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Anatomic characteristics of the lacrimal sac and adjacent bony structures–a computed tomographic-dacryocystography research
- Date Crossref
- 18/02/2025
- Éditeur
- Press of International Journal of Ophthalmology (IJO Press)
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Chinese Academy of Medical Sciences & Peking Union Medical College pays non établi dans la noticeUniversité ou école supérieure
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Eye & ENT Hospital of Fudan University pays non établi dans la noticeÉtablissement de santé
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Shandong Eye Hospital pays non établi dans la noticeÉtablissement de santé
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Kaifeng City Children's Hospital pays non établi dans la noticeÉtablissement de santé
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Eye and ENT Hospital of Fudan University Eye Institute and Department of Ophthalmology pays non établi dans la noticeUniversité ou école supérieure
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NHC Key laboratory of Myopia and Related Eye Diseases pays non établi dans la noticeStructure de recherche
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Shanghai Key Laboratory of Visual Impairment and Restoration pays non établi dans la noticeStructure de recherche
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Children's Hospital of Kaifeng Department of Ophthalmology pays non établi dans la noticeÉtablissement de santé
Chinese Academy of Medical Sciences & Peking Union Medical College, Eye & ENT Hospital of Fudan University et Shandong Eye Hospital, avec 5 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.