| Autor: |
Valenzuela-Fuenzalida JJ; Departamento de Ciencias Química y Biológicas, Facultad de Ciencias de la Salud, Universidad Bernardo O'Higgins, Santiago 8320000, Chile.; Departament de Morfología, Facultad de Medicina, Universidad Andrés Bello, Santiago 8370146, Chile., Moyano-Valarezo L; Departament de Morfología, Facultad de Medicina, Universidad Andrés Bello, Santiago 8370146, Chile., Silva-Bravo V; Departament de Morfología, Facultad de Medicina, Universidad Andrés Bello, Santiago 8370146, Chile., Milos-Brandenberg D; Departament de Morfología, Facultad de Medicina, Universidad Andrés Bello, Santiago 8370146, Chile.; Escuela de Medicina, Facultad Ciencias de la Salud, Universidad del Alba, Santiago 8320000, Chile., Orellana-Donoso M; Escuela de Medicina, Universidad Finis Terrae, Santiago 7501015, Chile.; Department of Morphological Sciences, Faculty of Medicine and Science, Universidad San Sebastián, Santiago 8420524, Chile., Nova-Baeza P; Departament de Morfología, Facultad de Medicina, Universidad Andrés Bello, Santiago 8370146, Chile., Suazo-Santibáñez A; Faculty of Health and Social Sciences, Universidad de las Américas, Santiago 7500975, Chile., Rodríguez-Luengo M; Departament de Morfología, Facultad de Medicina, Universidad Andrés Bello, Santiago 8370146, Chile., Oyanedel-Amaro G; Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, Santiago 8910060, Chile., Sanchis-Gimeno J; GIAVAL Research Group, Department of Anatomy and Human Embryology, Faculty of Medicine, University of Valencia, 46001 Valencia, Spain., Gutiérrez Espinoza H; One Health Research Group, Universidad de las Americas, Quito 170124, Ecuador. |
| Abstrakt: |
Background: Glioblastoma is a primary malignant brain tumor; it is aggressive with a high degree of malignancy and unfavorable prognosis and is the most common type of malignant brain tumor. Glioblastomas can be located in the brain, cerebellum, brainstem, and spinal cord, originating from glial cells, particularly astrocytes. Methods: The databases MEDLINE, Scopus, Web of Science, Google Scholar, and CINAHL were researched up to January 2024. Two authors independently performed the search, study selection, and data extraction. Methodological quality was evaluated with an assurance tool for anatomical studies (AQUA). The statistical mean, standard deviation, and difference of means calculated with the Student's t -test for presence between hemispheres and presence in the frontal and temporal lobes were analyzed. Results: A total of 123 studies met the established selection criteria, with a total of 6224 patients. In relation to the mean, GBM between hemispheres had a mean of 33.36 (SD 58.00) in the right hemisphere and a mean of 34.70 (SD 65.07) in the left hemisphere, due to the difference in averages between hemispheres. There were no statistically significant differences, p = 0.35. For the comparison between the presence of GBM in the frontal lobe and the temporal lobe, there was a mean in the frontal lobe of 23.23 (SD 40.03), while in the temporal lobe, the mean was 22.05 (SD 43.50), and for the difference in means between the frontal lobe and the temporal lobe, there was no statistically significant difference for the presence of GBM, p = 0.178. Conclusions : We believe that before a treatment, it will always be correct to know where the GBM is located and how it behaves clinically, in order to generate correct conservative or surgical treatment guidelines for each patient. We believe that more detailed studies are also needed to show why GBM is associated more with some regions than others, despite the brain structure being homologous to other regions in which GMB occurs less frequently, which is why knowing its predominant presence in brain regions is very important. |
