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Medicina clínica y social

On-line version ISSN 2521-2281


SANTACRUZ-AGUERO, Juan Francisco  and  MENA-CANATA, Carlos Enrique. Tomographic Characteristics of Normal Laryngeal Anatomy in patients attending the Medical Imaging Service of the Hospital de Clínicas San Lorenzo, Paraguay 2020. Med. clín. soc. [online]. 2021, vol.5, n.3, pp.131-134. ISSN 2521-2281.


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.


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.


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.


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.

Keywords : normal laryngeal anatomy; computed tomography; laryngeal cartilage calcification; thyroid cartilage height; thyro-arytenoid; interarytenoid distance; preepiglottic space.

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