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Introduction: Pituitary apoplexy (PA) is a rare neuroendocrinological emergency. The SARS-CoV-2 pandemic recommendations led to a shift in the management of patients with pituitary diseases, especially in the decision-making between conservative and surgical treatment of patients with PA., Objective: This study aimed to describe the conservative and surgical treatment and the clinical, visual, and endocrinological outcomes in patients with PA at the Pituitary Center of Excellence (PTCEO) during the SARS-CoV-2 pandemic and within three years., Methods: This is a cohort study. Patients with PA between April 2020 and September 2023 were followed up. Treatment decisions, clinical manifestations, hormonal profile, and tumor size with MRI were described at the onset, at three months, six months, one year, two years, and three years after diagnosis., Results: A total of 27 patients with PA diagnosis were included in the study. Of these, 12 patients were conservatively treated, six (50%) had prolactinomas, five (41.6%) had non-functioning adenomas, and one (8.3%) had pituicytoma. Fifteen patients were surgically intervened during the first hospitalization, nine (60%) had non-functioning adenomas, four (26.6%) had prolactinomas, one (6.6%) had ACTH-producing adenoma, and one (6.6%) had gonadotropinoma. Two patients from the conservatively treated group (one non-functioning adenoma and one pituicytoma) were intervened surgically at years 2 and 3, respectively. During the initial assessment, there were no statistically significant differences between patients in visual acuity (9 [75%] vs 15 [100%]), visual field affection (8 [66.6%] vs 11 [73.3%]), and cranial nerve deficit (3 [25%] vs 6 [40%]). At six months follow-up, no statistically significant differences were found in the visual acuity improvement (8 [88%] vs 11 [100%]), visual field (8 [100%] vs 8 [72%]), and cranial nerve deficit between the two groups (3 [100%] vs 6 [100%]). Meanwhile, the average length of in-hospital stay was 1.5 vs 10 days (p = 0.019). The tumor size and largest diameter were smaller in the surgically treated group (6.2 vs. 0.5 cm 3 , p = 0.029 and 2.5 vs. 1.1 cm, p = 0.036, respectively). Visual acuity improved in nine (58.3%) patients at year 1: two (40%) conservative vs seven (100%) surgical (p = 0.039); six (85.7%) patients at year 2: two (66.6%) conservative vs. four (100%) surgical; and three (100%) patients on both groups at year 3. Fourteen patients needed hormonal substitution: 87.5% (eight [88.8%] conservative vs six [85.7%] surgical) at year 1, 85.7% (six patients in both groups) at year 2, and 80% (four conservative vs three [100%] surgical) at year 3. The thyrotropic axis was the most affected in both groups during the three years. During the first-year follow-up, six (85%) patients persisted with tumoral regression (2 [66.6%] conservative vs 4 [100%] surgical) and one (14.2%) patient from the medical group progressed. During the second and third years, 10 and three (100%) of the patients, respectively, showed the regression of the tumoral volume in both groups., Conclusions: The clinical, visual, and neuroendocrinological outcomes were similar in both groups of patients with PA during the SARS-CoV-2 pandemic. In cases where the Pituitary Apoplexy Score (PAS) score does not surpass three points without neurological deterioration, conservative management can be considered an adequate option for treatment., Competing Interests: Human subjects: Consent was obtained or waived by all participants in this study. National Institute of Neurology and Neurosurgery Bioethics and Clinical Research Committee issued approval 38/21. Animal subjects: All authors have confirmed that this study did not involve animal subjects or tissue. Conflicts of interest: In compliance with the ICMJE uniform disclosure form, all authors declare the following: Payment/services info: All authors have declared that no financial support was received from any organization for the submitted work. Financial relationships: All authors have declared that they have no financial relationships at present or within the previous three years with any organizations that might have an interest in the submitted work. Other relationships: All authors have declared that there are no other relationships or activities that could appear to have influenced the submitted work., (Copyright © 2024, Pineda-Centeno et al.)

Introduction Meningiomas have been described as slow-growing neoplasms with benign behavior derived from the connective tissue surrounding the brain and spinal cord. Meningiomas represent one-third of primary central nervous system (CNS) tumors. The World Health Organization (WHO) initially classified them into three groups based on their histopathological characteristics, recently incorporating molecular patterns. Small cohorts have been reported in Latin America compared to the international literature. Ignoring the epidemiology of meningiomas in this region and considering this limitation, we aim to study the epidemiology of meningiomas in our country, Mexico. Material and methods A historical cohort was carried out on 916 patients diagnosed with intracranial meningiomas from January 2008 to January 2021, considering sociodemographic, topographic, and histopathological characteristics. Results In this study, 69.4% (n=636) of patients were women with a mean overall age of 47.53 (SD=14.85) years; 79.6% (n=729) of the lesions were supratentorial with convexity meningiomas being the most prevalent at 32.6% (n=299). Histopathologically, transitional (45.7%) (n=419), meningothelial (22.1%) (n=202), and fibroblastic (16.7%) (n=153) meningiomas were the most frequent. We found significant differences between men and women in age (p=0.01), infra or supratentorial presentation (p<0.001), location of the lesion (p<0.001), and histopathological characteristics (p<0.001). Conclusions Our results are consistent with what has been reported; however, until now, it appears as the largest series reported in our country and Latin America., Competing Interests: The authors have declared that no competing interests exist., (Copyright © 2023, Alvaro-Heredia et al.)