Knowledge Practical Attitude of Health Professionals on Breast Cancer at the Hospital of the District of the Commune IV of Bamako

Introduction: The level of knowledge and attitude of health professionals about breast cancer are important determinants. General objective: To study the knowledge, attitude and practice of health professionals of the hospital of the district of the commune IV on breast cancer. Methodology: This was a cross-sectional, prospective, descriptive, qualitative and quantitative study. The study period was from 01 October 2022 to December 2022. Results: In one week of survey, 110 health workers (intern, obstetrician nurse, general practitioners and specialists) received the survey sheet, 80 health workers informed it, a participation rate of 73%. The male sex was most represented at 63.75% with a sex ratio of 1.76. The average age was 39.59 years with extremes of 22 and 61 years. The clinical signs evoked by the participants were: breast nodule (81.25%), followed by breast discharge (48.75%). In relation to risk factors: interns and obstetrician nurses had no good knowledge, 51.72% of general practitioners had good knowledge, 43.48% of specialist doctors had good knowledge, and 5.88% of the wise had good knowledge. Conclusion: Breast cancer is a common pathology around the world, health professionals are at the forefront of the fight against breast cancer, and this fight cannot be effective without trained personnel.

Liposarcoma Retro-Peritoneal in the General Surgery Department of the Hospital of the District of the Commune IV

Retroperitoneal soft tissue sarcomas in the retroperitoneal/intra-abdominal regions represent 10% - 15% of all cases of soft tissue sarcoma. Liposarcomas, which are the most common histological type, account for 20% - 45% of retroperitoneal/intra-abdominal sarcoma cases, and 20% of liposarcomas cases are primary retroperitoneal liposarcomas. Surgical resection in case of malignancy remains the treatment of choice for liposarcomas, according to the guidelines of most major international companies. Our goal was to improve the management of retroperitoneal liposarcoma. This was a 65-year-old patient, with no medical or surgical history, who was referred to us for abdominal swelling, in whom clinical and paraclinical examination found retroperitoneal liposarcoma stage IV, and the surgical treatment consisted in making a tumor reduction. Conclusion: Retro-peritoneal liposarcoma is an undervalued malignant tumor, and the diagnosis is often late.

Stability of a Delayed Stochastic Epidemic COVID-19 Model with Vaccination and with Differential Susceptibility

In this paper, we treat the spread of COVID-19 using a delayed stochastic SVIRS (Susceptible, Infected, Recovered, Susceptible) epidemic model with a general incidence rate and differential susceptibility. We start with a deterministic model, then add random perturbations on the contact rate using white noise to obtain a stochastic model. We first show that the delayed stochastic differential equation that describes the model has a unique global positive solution for any positive initial value. Under the condition R0 ≤ 1, we prove the almost sure asymptotic stability of the disease-free equilibrium of the model.

Secondary Stress Induced Central Serous Chorioretinopathy in Bamako: Report of Two Cases

Introduction: Idiopathic central serous chorioretinopathy (ICSC) is characterized by the buildup of fluid leading to circumscribed elevation of the retina within the posterior pole. This condition affects young people between the ages of 20 - 50 years. The disease is seen predominantly in men as compared to women. We report the cases of two (02) patients received in consultation at IOTA-Teaching Hospital between July 2019 and February 2020. Case Presentation: We report two cases of Idiopathic stress central serous chorioretinopathy. The first case is a 37-year-old man that we received in consultation for visual acuity decrease from a sudden installation for 1 hour. The clinical and paraclinical arguments permitted us to retain the diagnosis of Idiopathic stress central serous chorioretinopathy. The patient benefited from laser treatment and the clinical evolution was good. The second case is a 42-year-old man, who consulted for a sudden reduction of visual acuity that had been evolving for 3 weeks. The clinical and paraclinical contexts were in favour of the diagnosis of Idiopathic stress central serous chorioretinopathy. The patient was treated with spironolactone. The clinical evolution was favourable. Conclusion: Our study confirms the existence of central serous chorioretinopathy (CSC) in Black African patients. Studies show the connection between CSC and stress.

经典风险模型中破产概率的一个渐近式(英文)

本文研究经典风险模型中破产概率的渐近行为.利用几何和的方法,获得了索赔额的分布属于S(γ) ,γ>0,时破产概率的一个局部渐近式.同时,给出了一个具体的数值的例子.

A Local Asymptotic Behavior for Ruin Probability in the Renewal Risk Model

Let R（t）=u＋ct-∑ I=1^N（t） Xi,t≥0 be the renewal risk model, with Fx（x）being the distribution function of the claim amount X. Let ψ（u） be the ruin probability with initial surplus u. Under the condition of Fx（x） ∈ S^＊（γ）,y ≥ 0, by the geometric sum method, we derive the local asymptotic behavior for ψ（u,u ＋ z] for every 0 （ z （ oo, On one hand, the asymptotic behavior of ψ（u） can be derived from the result obtained. On the other hand, the result of this paper can be applied to the insurance risk management of an insurance company.