RESUMEN
The treatment of central nervous system (CNS) tumors constitutes a significant part of a pediatric neurosurgeon's workload. The classification of such neoplasms spans many entities. These include low- and high-grade lesions, with both occurring in the population of patients under 18 years of age. Magnetic resonance imaging serves as the imaging method of choice for neoplastic lesions of the brain. Through its different modalities, such as T1, T2, T1 C+, apparent diffusion coefficient (ADC), diffusion-weighted imaging (DWI), susceptibility-weighted imaging (SWI), fluid-attenuated inversion recovery (FLAIR), etc., it allows the medical team to plan the therapeutic process accordingly while also possibly suggesting the specific tumor subtype prior to obtaining a definitive histological diagnosis. We conducted a retrospective study spanning 32 children treated surgically for brain tumors between July 2021 and January 2023 who had a precise histological diagnosis determined by using the 2021 WHO Classification of Tumors of the Central Nervous System. We divided them into two groups (high-grade and low-grade tumors, i.e., WHO grades 1 and 2, and grades 3 and 4, respectively) and analyzed their demographic data and preoperative MRI results. This was done using the following criteria: sub or supratentorial location of the tumor; lesion is circumscribed or infiltrating; solid, cystic, or mixed solid and cystic character of the tumor; number of compartments in cystic lesions; signal intensity (hypo-, iso-, hyperintensity sequences: T1, T2, T1 C+); presence of restricted diffusion; the largest diameter of the solid component and/or the largest diameter of the largest cyst in the transverse section. Then, we examined the results to find any correlation between the lesions' morphologies and their final assigned degree of malignancy. We found that the only radiological criteria correlating with the final WHO grade of the tumor were an infiltrative pattern of growth (25% of low-grade lesions, 75% of high-grade; p = 0.006) and the presence of a cystic component in the tumor (in 68.75% of low-grade tumors and 43.75% of high-grade tumors; p = 0.041). The only other feature close to attaining statistical significance was diffusion restriction (33.3% of low-grade tumors, 66.7% high-grade; p = 0.055). Older children tended to present with tumors of lower degrees of malignancy, and there was a predominance of female patients (21 female, 11 male).
RESUMEN
Background The first electronic sports (esports) tournament was recorded in 1972, and since then, gaming leagues and tournaments with prizes have been established. Nowadays, the commercialization of competitive gaming may drive players to cheat their way to success and neglect their physical and mental well-being. The issue is all the more vital, as it is often overlooked by classically educated doctors, including sports medicine specialists. The aim of this study was to investigate the current situation of doping in esports and the future of anti-doping actions in this field, as well as to present a more generalised approach and to point out and discuss other possible health risks associated with the rising popularity of esports. Methods A standardised online survey was published in a social media group for Polish fans and people associated with esports. Two hundred and forty-one responses were collected and subjected to a statistical analysis. Only filled-out forms containing answers to all of the questionnaire's questions from people considering themselves regular players of either League of Legends (LoL) and/or Counter-Strike: Global Offensive (CS:GO) were considered viable. The study group was divided into amateur and professional players. The calculation of test power was done post hoc to determine whether the data collected were of sufficient quality to be used further. The normal distribution was assessed using the Shapiro-Wilk test. Then, between-group differences comparing the data results from the questionnaire were analysed with Mann-Whitney U tests and Chi-square tests. The significance level was set at p <0.05. Then, the literature was screened for relevant articles. Results The majority of gamers (85.5%), despite most of them being amateurs, strive to achieve the best results when playing. Borderline legal substances are commonly used, including energy drinks (97.8%), coffee (81.6%), beer (29.7%), herbs (15.7%), and available medicines (15.1%), while more than half the participants have heard about situations during tournaments involving the use of substances forbidden by the World Anti-Doping Agency (WADA). In most answers, there were no significant differences between professionals and amateurs. Statistically significant differences were observed in the following areas: the usage of legal stimulants in the responders' environments; outlooks on implementing more strict anti-doping regulations; and the perceived usage of forbidden doping substances in a tournament setting. Conclusions E-competitors suffer from a plethora of both physical and mental health problems. These issues may be more prevalent than generally thought and include repetitive strain injuries, sleep disorders, anxiety, and depression. The largest esports organisations have started to implement measures to provide a holistic approach to esports healthcare; however, it remains a distant dream for most amateurs and aspiring e-athletes.
RESUMEN
The thymus gland plays a crucial role in the maturation process of lymphocyte T cells. Developmental disorders of this organ might be caused by genetic diseases, such as the 22q11.2 deletion and DiGeorge syndrome. Other manifestations of this condition are heart defects, a reduced number of T cells, hypocalcemia, and facial dysmorphia. A 13-year-old boy with 22q11 deletion syndrome presented with paresis and paresthesia of the right upper extremity. Magnetic resonance imaging (MRI) revealed a solid mass in the retropharyngeal and prevertebral areas. The lesion was excised and, upon histopathological examination, turned out to be ectopic thymic tissue. A follow-up examination showed no recurrence of the lesion. The ectopic thymus is a rare pathology, especially in 22q11 deletion syndrome patients. In general, thymic tissue can be found anywhere along its normal path of descent. In this case, however, its location cannot be explained solely by its embryological origin, as at no point should the thymus or its histological predecessor be located in the retropharyngeal area. As such, this finding challenges our current understanding of thymic embryological genesis.