Anatomical variables with potential risk profi le for papyrus lamina injury during nasal endoscopic surgery in computed tomography at the Hospital Militar Central
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Abstract
Introduction: Accidental damage to the lamina papyracea during endoscopic en donasal surgery is a common complication. Determining its position relative to the maxillary drainage ostium in preoperative tomographic analysis will allow us to reduce the risk of injury. Objective: This study aims to describe how these anatomical risk variables are distributed. This imaging assessment was performed using computed tomography images of healthy patients over 18 years old who attended the Central Military Hospital between June 2019 and April 2022. Study design: Descriptive observational cross-sectional study. Materials and methods: A sample size calculation was performed where 410 computed tomography scans of healthy adult patients’ paranasal sinuses were randomly selected. The position of the lamina papyracea on each side was categorized concerning the maxillary drainage ostium at the level of the inferior turbinate insertion in the lateral nasal wall. Results: A total of 410 tomographies were analyzed, revealing that the position of the lamina papyracea in relation to the medial antrostomy line (MAL) was classified as type I in 65.1% to 69.8% of cases, type II in 28.8% to 22.4%, and type III in 6.1% to 7.8%. These findings were consistent with previous studies, where type I was the most common position, followed by type II and, lastly, type III.
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Este artículo es publicado por la Revista Acta de Otorrinolaringología & Cirugía de Cabeza y Cuello.
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eISSN: 2539-0856
ISSN: 0120-8411
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