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      Características Tomográficas de la Anatomía Laríngea Normal en pacientes que acuden al Servicio de Medicina en Imágenes del Hospital de Clínicas San Lorenzo, Paraguay 2020 Translated title: Tomographic Characteristics of Normal Laryngeal Anatomy in patients attending the Medical Imaging Service of the Hospital de Clínicas San Lorenzo, Paraguay 2020

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          Abstract

          RESUMEN Introducción: La tomografía computarizada es el estudio Gold standard para complementar a la endoscopia en el estudio de patologías laríngeas. Por lo tanto, se debe tener conocimiento de la anatomía normal de la laringe. Metodología: Se realizó un estudio observacional descriptivo, de corte transversal retrospectivo. Se recolecto los datos a través del análisis tomográfico, se analizaron 26 tomografías de pacientes que acudieron al Servicio de Imágenes del Hospital de Clínicas sin patología laríngea. Las variables investigadas fueron características tomográficas como: Calcificación cartílagos laríngeos, Altura cartílago tiroideo, Distancia tiro-aritenoidea, Distancia interaritenoidea, Altura y diámetro del espacio preepiglótico. Resultados: Se lograron identificar cada una de las características anatómicas radiológicas buscadas. Además, se realizaron las mediciones correspondientes, detallando el promedio de cada una de las mediciones y clasificándolo por sexo. La altura de cartílago tiroideo la media en hombres fue 28.05±1.2 mm y en mujeres fue 27.8±0.92 mm, para la distancia Tiro-aritenoidea en hombres fue 12.3±1.3 y en mujeres 10.97±0.95 mm, para el diámetro transversal del cartílago tiroideo en hombres fue 16.63±1.58 mm y en mujeres 17.96±1.11 mm. Conclusión: Los promedios de las mediciones realizadas fueron mayor en hombres excepto en el diámetro transversal del cartílago tiroideo, La prevalencia de calcificación de cartílagos laríngeos fue del 54% de los pacientes estudiados.

          Translated abstract

          ABSTRACT Introduction: Computed tomography is the Gold standard study to complement endoscopy in the study of laryngeal pathologies. Therefore, knowledge of the normal anatomy of the larynx is required. Methodology: A retrospective cross-sectional descriptive observational study was carried out. Data were collected through tomographic analysis, 26 tomographies of patients who attended the Imaging Service of the Hospital de Clínicas without laryngeal pathology were analyzed. The variables investigated were tomographic characteristics such as: laryngeal cartilage calcification, thyroid cartilage height, thyro-arytenoid distance, interarytenoid distance, height and diameter of the pre-epiglottic space. Results: Each of the radiological anatomical characteristics sought were identified. In addition, the corresponding measurements were taken, detailing the average of each of the measurements and classifying them by sex. The average thyroid cartilage height in men was 28.05±1.2 mm and in women was 27.8±0.92 mm, for the thyro-arytenoid distance in men was 12.3±1.3 and in women 10.97±0.95 mm, for the transverse diameter of the thyroid cartilage in men was 16.63±1.58 mm and in women 17.96±1. 11 mm. Conclusions: The averages of the measurements taken were higher in men except for the transverse diameter of the thyroid cartilage. The prevalence of laryngeal cartilage calcification was 54% of the patients studied.

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          Estimación personas extranjeras residentes habituales en Chile al 31 de diciembre de 2019

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            The degree to which accuracy of preoperative staging of laryngeal carcinoma has been enhanced by computed tomography.

            In this retrospective study, the accuracy of preoperative staging by high-resolution CT and clinical evaluation (indirect-direct laryngoscopy) is compared to the postsurgical pathologic staging of laryngeal cancer. Forty-two patients who were admitted to St. Louis University Hospital between the years of 1978 to 1985 with diagnoses of laryngeal cancer were included. All patients received high-resolution CT scan of the larynx preoperatively and subsequently underwent total or partial laryngectomy. None of these patients received preoperative radiotherapy. The accuracy of the clinical vs. CT staging--as well as the accuracy of the staging by combination of the two modalities--was determined by comparison with the postsurgical pathologic staging. The accuracy was assessed separately for glottic, supraglottic, and transglottic carcinoma. The accuracy of CT staging for glottic carcinoma was 75%. However, clinical evaluation in this group of lesions was very reliable, offering 92.9% accuracy. The accuracy of CT staging increased in the supraglottic and transglottic lesions, to become superior to the clinical staging. With combined information gained by both examinations, the preoperative staging accuracy was 91.4% for supraglottic carcinoma and 87.5% for transglottic carcinoma. It is, therefore, recommended that high-resolution CT should be included in the preoperative staging of laryngeal cancer.
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              Computed tomography of the larynx

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                Author and article information

                Journal
                mcs
                Medicina clínica y social
                Med. clín. soc.
                Facultad de Ciencias Médicas, Filial de Santa Rosa del Aguaray, Cátedra de Socioantropología (Santa Rosa del Aguaray, , Paraguay )
                2521-2281
                December 2021
                : 5
                : 3
                : 131-134
                Affiliations
                [1] San Lorenzo Asunción orgnameUniversidad Nacional de Asunción orgdiv1Facultad de Ciencias Médicas Paraguay
                Article
                S2521-22812021000300131 S2521-2281(21)00500300131
                10.52379/mcs.v5i3.217
                3b7c8e3b-8b82-4c8c-a990-ded7c817bd48

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 21 June 2021
                : 20 August 2021
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 12, Pages: 4
                Product

                SciELO Paraguay

                Categories
                Artículos Originales

                preepiglottic space,anatomía laríngea normal,tomografía computarizada,calcificación cartílagos laríngeos,altura cartílago tiroideo,distancia tiro-aritenoidea,interaritenoidea,espacio preepiglótico.,normal laryngeal anatomy,computed tomography,laryngeal cartilage calcification,thyroid cartilage height,thyro-arytenoid,interarytenoid distance

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