Prevalencia de Aracnoidocele Selar Identificado por Tomografía Computarizada en Pacientes entre 20-90 Años en Medimagen, 2020 – 2024

Abstract

Background: Sellar arachnoidocele is a radiological finding characterized by herniation of the subarachnoid space into the sella turcica, resulting in pituitary flattening and morphological variations detectable by computed tomography (1). Although it is often described as an incidental finding, it may be associations with neurological, visual, and endocrine symptoms (2). Objective: To determine the prevalence of sellar arachnoidocele identified by computed tomography in patients aged 20 to 90 years treated at Medimagen-Cuenca during the period 2020–2024, and to describe its distribution according to age, sex, and degree of involvement. Methodology: An observational, descriptive, and quantitative study was conducted. A total of 422 cranial computed tomography imaging reports were reviewed, applying inclusion and exclusion criteria. Descriptive statistics based on frequencies and percentages were used to analyze the variables sex, age, and degree of arachnoidocele. Results: Of the 422 reports reviewed, 383 cases presented with sellar arachnoidocele, with a prevalence of 90.7%. Of the cases, 75.5% corresponded to women and 24.5% to men. The highest prevalence was observed in the 60-74- year group (27.2%), followed by the 50-59- year group (23.2%). Regarding the degree of involvement, Grade IV was the most prevalent (59.3%), followed by Grade III at (22.5%), while Grade I showed the lowest proportion at (4.2%). Conclusion: Sellar arachnoidocele showed a prevalence of 90.7% in the studied population. Advanced grades were the most prevalent, highlighting the need to strengthen imaging evaluation and promote local research.