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Enhancing Pneumonia Detection in Pediatric Chest X-Rays Using CGAN-Augmented Datasets and Lightweight Deep Transfer Learning Models

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Journal of Data Analysis and Information Processing 2024年第1期12卷 1-23页

作者： coulibaly mohamed Ronald Waweru Mwangi John M. Kihoro Department of Mathematics Pan African University Institute for Basic Sciences Technology and Innovation (PAUSTI) Nairobi Kenya Department of Computing Jomo Kenyatta University of Agriculture and Technology Nairobi Kenya School of Computing and Mathematics The Cooperative University of Kenya Nairobi Kenya

Pneumonia ranks as a leading cause of mortality, particularly in children aged five and under. Detecting this disease typically requires radiologists to examine chest X-rays and report their findings to physicians, a task susceptible to human error. The application of Deep Transfer Learning (DTL) for the identification of pneumonia through chest X-rays is hindered by a shortage of available images, which has led to less than optimal DTL performance and issues with overfitting. Overfitting is characterized by a model’s learning that is too closely fitted to the training data, reducing its effectiveness on unseen data. The problem of overfitting is especially prevalent in medical image processing due to the high costs and extensive time required for image annotation, as well as the challenge of collecting substantial datasets that also respect patient privacy concerning infectious diseases such as pneumonia. To mitigate these challenges, this paper introduces the use of conditional generative adversarial networks (CGAN) to enrich the pneumonia dataset with 2690 synthesized X-ray images of the minority class, aiming to even out the dataset distribution for improved diagnostic performance. Subsequently, we applied four modified lightweight deep transfer learning models such as Xception, MobileNetV2, MobileNet, and EfficientNetB0. These models have been fine-tuned and evaluated, demonstrating remarkable detection accuracies of 99.26%, 98.23%, 97.06%, and 94.55%, respectively, across fifty epochs. The experimental results validate that the models we have proposed achieve high detection accuracy rates, with the best model reaching up to 99.26% effectiveness, outperforming other models in the diagnosis of pneumonia from X-ray images.

关键词： Pneumonia Detection Pediatric Radiology CGAN (Conditional Generative Adversarial Networks) Deep Transfer Learning Medical Image Analysis

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Methyl Donors Supplementation Attenuates the Adverse Effects of Maternal High Fructose Diet of Offspring Emotional and Cognitive Behaviors

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Open Journal of Endocrine and Metabolic Diseases 2017年第11期7卷 203-218页

作者： Sidi mohamed coulibaly Abdelhalem Mesfioui Ali Ouichou Pacome Kouadio N’Go Amina El Hasnaoui Abdeljabbar Nassiri Aboubaker El Hessni Laboratory of Genetics Neuroendocrinology and BiotechnologyFaculty of SciencesUniversity Ibn TofailKenitraMorocco Training and Research Unit of Biology Sciences Peleforo Gon Coulibaly UniversityKorhogoIvory Coast

Free Fatty acid is an end-product of hepatic metabolism of fructose. Most of past studies have demonstrated significant relationship between gestational high fat diet and metabolic and physiology outcomes in offspring. However, there is a scarce of data extended to the effects of high fructose diet-fed dams on juveniles’ progeny. Therefore, the present experiment was designed to examine the later effects of maternal high fructose diet intake during pregnancy and lactation on juvenile offspring rats emotional behaviors and memory abilities. We tested whether methyl donors supplemented to that high fructose diet could reverse the adverse effects. We found at two months of age, anxiety-like behavior and depression-like behavior were elevated in off springs of mother fed to high fructose diet and a sex difference effect with males were more affected than females. In addition, behavioral outcomes indicated that the high fructose diet also impaired spatial working and recognition memories in the Y-maze and object recognition test respectively. Blood glucose intolerance increased significantly in juvenile males rats of dams fed with high fructose diet when compared to females. However, a supplementation of the maternal diet with methyl donors attenuated all these changes. Our study suggested a controlled fructose diet supplemented to methyl donors during critical period of brain developing (in utero and pre-weaning stage), otherwise that could induced irreversible detrimental effects on offspring behavior and cognitive health.

关键词： High Fructose Diet Methyl Donors Anxiety-Like Depressive-Like Memory Glucose Intolerance Rat Offspring

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Prevalence and Factors Associated with Virologic Failure among People Living with HIV (PLHIV) Monitored in a Decentralized Health Care Facility

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Advances in Infectious Diseases 2019年第3期9卷 226-237页

作者： Selly Ba Ndeye Diama Ba Lamanatou Sembene Habibatou Dia mohamed coulibaly Jean Louis Ndiaye Ndeye Méry Dia Cheikh Tidiane Ndour Doctoral School of Thies University Thies Senegal Intrahealth International Dakar Senegal Roi Baudouin Hospital Dakar Senegal AIDS Monitoring Unit/Ministry of Health Dakar Senegal Department of Health Gaston Berger University Saint Louis Senegal

Introduction: In Senegal, the decentralization of Health Care Centers has contributed significantly to the intensification of antiretroviral treatment. However, Care providers are still facing the treatment optimizing challenge. Objectives: To determine the prevalence of virologic failures of PLHIV monitored in a decentralized Health care center and to determine associated factors. Patients and Methods: This is a cross-sectional descriptive and analytical study of PLHIV, aged 18 years and over, on first-line treatment, monitored onsite from February 1st to December 31st, 2018. A data collection form was completed from medical records (clinical, immuno-virologic and evolutionary). Any VL > 1000 cp/ml after 6 months of antiretroviral therapy (ART) was considered as virologic failure. Data were captured and analysed using the EPI INFO 2002software. Chi-square test and the Fisher test were used to compare the proportions;a value of p ≤ 0.05 was considered significant. Results: 331 patients were treated with HIV-1 profile in 89% of cases. A proportion of 55% was married and 97% came from rural areas. 80% were either not or poorly educated. The median of age was 44 ± 11 years with a F/M ratio of 3.4. At baseline, 56% were symptomatic at stage 3 or 4 of WHO. They had severe immunosuppression with a median CD4 count of 217 ± 187 cells/mm3, the viral load was detectable in half of the patients with a median VL of 97,000 cp/ml ± 70,569. The antiretroviral regimen combined 2 NRTIs with 1 NNRTI in 88% of cases. The median of follow-up was estimated at 60 ± 43 months. The prevalence of virologic failure was 19%. This prevalence was associated with age less than 25 years (p = 0.04), late diagnosis (CD4 at baseline less than 200 cel/mm3 (p = 0.002), stage 3 or 4 WHO (p = 0.04) High viral load greater than 10,000 (p = 0.04) at baseline. Conclusion: These results suggest making the new therapeutic classes accessible for first-line treatment.

关键词： ART Virologic Failure Associated Factors

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Pleomorphic Adenoma of the Salivary Glands: Two Atypical Locations

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International Journal of Otolaryngology and Head & Neck Surgery 2024年第3期13卷 251-257页

作者： Sidibé Youssouf Diarra Abraham Samaké Djibril Sanogo Boubacar Traoré Abdoul Moumine Diarra Kassim coulibaly Bourama Diakité Youssouf Keita mohamed Amadou Department of ENT and Head and Neck Surgery Mother-Child University Hospital “ Le Luxembourg&#8221 Bamako Mali Faculty of Medicine and Odontostomatology Bamako Mali Department of ENT and Head and Neck Surgery The Mali-Gavardo Hospital Bamako Mali Ministry of Higher Education and Scientific Research Bamako Mali ENT and Head and Neck Surgery Department of the Commune V Reference Health Center (CSRef CV) Bamako Mali Department of ENT and Head and Neck Surgery at CHU Gabriel Touré Bamako Mali Department of Anatomy and Pathological Cytology Gabriel Tour&#233 University Hospital Center Bamko Mali Department of Oral Surgery Sikasso Regional Hospital Sikasso Mali

Pleomorphic adenoma is the most common tumor of the salivary glands, accounting for approximately 50% of salivary gland lesions. It develops mainly in the salivary glands: parotid (80%), submaxillary (10%), sublingual (1%) and in the accessory oral-pharyngeal glands (9%). The aim of this work was to report 2 cases of pleomorphic adenoma of atypical location and then to discuss the difficulties linked to its diagnostic and therapeutic management in the Malian context. They were a 40-year-old man and a 72-year-old woman. They were admitted to the ENT department of the “Luxembourg Mere-infant” hospital for oropharyngeal swelling for the first and swelling of the palate for the second. The clinical expression was a swelling in both cases, of a hard, mobile consistency with healthy mucosa on their surface. The remainder of the physical examination was unremarkable. The diagnosis of a tumor of the oropharynx and palate was made following clinical radiological examinations. The histopathological examination of the surgical specimen made it possible to make the diagnosis of pleomorphic adenoma of the palate and the left palatine tonsil. The follow-up surgery was straightforward, with a favorable outcome. Pleomorphic adenomas are relatively rare benign tumors of the accessory salivary glands;their clinical expression remains swelling. Therapeutic management is surgery and the diagnosis is confirmed by histopathological examination.

关键词： Pleomorphic Adenoma Palate Tonsil Mali

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Cervical Meningocele about 2 Operated Cases

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Open Journal of Modern Neurosurgery 2024年第1期14卷 1-7页

作者： mohamed El Hassimi Cissé Mamadou Salia Diarra N’Famara Sylla Abdoulaye Diop Izoudine Blaise Koumaré Théodore Habib Maxime coulibaly Oumar Diallo Drissa Kanikomo Neurosurgery Department of CHU Mère-Enfant “Le Luxembourg” Bamako Mali Neurosurgery Unit of Army Medico-Surgical Center of Bamako Bamako Mali Neurosurgery Department of CHNU de Fann Dakar Sénégal Neurosurgery Department of CHU Hospital du Mali Bamako Mali Neurosurgery Department of CHU Gabriel Touré Bamako Mali

Cervical meningoceles are the least common forms of spina bifida, representing between 4% to 8% of all spinal dysraphisms. They are not accompanied by neurological deficit in childhood but attached cord syndrome can occur with growth. Surgical treatment, in addition to avoiding rupture and correcting the aesthetic damage, will preserve neurological functions. We report 2 cases that we took care of. They are a 5-month-old infant and a 3-year-old girl. The first presented a 7 cm rounded meningocele pedunculated through the C1 lamina defect. The second presented an 8.6 cm polylobed meningocele pedunculated through the C2 lamina defect. They both underwent surgery with good progress.

关键词： Cervical Meningocele Spinal Dysraphism Spina Bifida

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Ear Cholesteatoma Surgery in South Sahara: Our Experience in Bamako

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International Journal of Otolaryngology and Head & Neck Surgery 2024年第4期13卷 293-303页

作者： Kassim Diarra Oumou coulibaly Yaya Dembele Nfaly Konaté Sidibe Youssouf Saydi Ag mohamed Harouna Sanogo Abraham Diarra Ibrahim Fofana Moussa Bourama Keita Youssouf Traore Fatogoma Issa Koné Boubacary Guindo Siaka Soumaoro Doumbia Kadidiatou Singare mohamed Amadou Keita ORLCCF Department Gabriel Toure University Hospital Bamako Mali ORLCCF Unit Kati Army Polyclinics Kati Mali ENT-CCF Department CHU Luxembourg Bamako Mali ORLCCF Service of the Reference Center of Commune VI Sogoniko Bamako Mali

In Mali, cholesteatoma surgery remains a challenge due to the limited number of otological practitioners, and the low socio-economic level of patients reflecting the difficulties in performing CT or MRI for post-operative follow-up. We therefore initiated this work with the objective of analyzing, through a broad bibliographic review, the clinical, paraclinical, topographical, therapeutic and progressive aspects of a series of ear cholesteatoma. Materials and Method: This was a retrospective and prospective, descriptive study that took place in the ENT and head and neck surgery department of the Gabriel Touré University Hospital over 36 months from November 2020 to October 2023. These were patients admitted to the department for chronic cholestematous otitis media. Result: In total, we collected 34 files of patients admitted for cholesteatoma. This represented 9% of cases compared to all otological surgeries carried out during the same period, i.e. 362 cases. The average age of our patients was 35.31 years, with extremes ranging from 7 years to 80 years, there were 24 men and 10 women, i.e. a M/F ratio of 2.4. The average time to diagnosis was 7 years. The main functional signs were dominated by chronic fetid purulent otorrhea associated with hypoacusis in 94.6% of cases. One case of meningeal complication and three cases of cerebral empyema were reported. Clinically, a postero-superior and marginal tympanic perforation was observed in 53%, a retraction pocket in 5.9%, the sentinel polyp in 9%, and a non-marginal tympanic perforation in 32%. Pure-tone audiometry performed preoperatively for all patients showed conductive hearing loss in 83%. In 82% of cases we created a recess with the creation of a mini box. An ossiculoplasty was performed immediately with fragments of cartilage. The postoperative course found the disappearance of otorrhea (88.23%), the persistence of otorrhea in one case, two cases of facial paralysis, and one case of tinnitus. We did not identify

关键词： Cholesteatoma CT TTO TTF

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Epidemiological, Clinical and Paraclinical Profile of Osteoarthritis of the Lower Limbs in Obese Patients at the Cocody University Teaching Hospital

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Open Journal of Rheumatology and Autoimmune Diseases 2024年第2期14卷 69-76页

作者： Nzima Brice Kollo Aboubakar Bamba¹ Aboubacar Sidiki Condé Nzima Hilary Ngon Kanbaye Medom Ada Nina Kpami Yaya coulibaly Kan Joseph Enoch Koffi Ehaulier Soh Christian Louis Kouakou mohamed Diomandé¹ Edmond Eti Rheumatology Department Cocody University Hospital Abidjan C&#244te d&#8217Ivoire Internal Medicine Department Yaounde University Hospital Yaounde Cameroon Rheumatology Department Bouake University Hospital Bouake C&#244te d&#8217Ivoire

Objective: To describe the epidemiological, clinical and paraclinical characteristics of osteoarthritis of the lower limbs in obese patients at the Cocody University Teaching Hospital. Methodology: This was an analytical cross-sectional study carried out in the rheumatology department of the Cocody UTH in Abidjan (Ivory Coast) from March 1 to April 30 2023. Patients who came for rheumatology consultation presenting with mechanical arthralgia of the lower limbs, who were obese, had radiographic images were included. All patients without radiographic images were excluded. Obesity was defined as a body mass index (BMI) greater than or equal to 30 kg/m. The Chi2 test was used to compare proportions and determine the existence of associations between osteoarthristis and obesity, obesity severity and radiographic stage of osteoarthritis as well as the functional impact. A p-value below a predefined threshold (p = 0,05) indicates a significant relationship between the variables. Result: Out of 185 patients received for osteoarthritis of the lower limbs during the study period, 136 were obese (74%). There were 115 women (84.6%) with an average age of 56.03 with a standard deviation of 12.72 years (extremes: 22 and 84 years). The main socio-professional category was the informal sector (30%). The majority of patients had a low socio-economic level (80.2%) and lived in urban areas (92.6%). The most common past medical history was hypertension (33.08%) followed by peptic ulcer disease (16.91%). Patients had a body mass index class 1 (81.6%), class 2 (15.40%) and class 3 (2.90%). The average duration of symptom progression until diagnosis was 11 months. Genu varum was the main static disorder (56.10%) and the knee joint was the dominant topography (90.4%) with a bilateral localization (80%). The average Lequesne index was greater than 8 (59.5%). The Kellgren and Lawrence radiographic stages were stage 1 (9.20%), stage 2 (46.90%), stage 3 (29.20%) and stage 4 (6.90%).

关键词： Osteoarthritis Lower Limbs Obesity Abidjan

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Evaluation of the Integrated Management Program for Acute Malnutrition in the Douentza Health District, Mopti Region, Mali

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Food and Nutrition Sciences 2024年第8期15卷 790-806页

作者： Abdoul Salam Diarra Lamine Traore mohamed Diarra Tawfiq Abu Mamadou Traore Yacouba Guindo Sidi Sangare Seydou Kante Intimbeye Tembine Dramane coulibaly Mamadou Fodé Diarra Salia Keita Sadio Sambala Diallo Mamadou Samake Hamadoun Sangho National Center for Scientific and Technological Research Bamako Mali Division of Nutrition Regional Directorate of Health and Public Hygiene Mopti Mali Department of Pediatric Health Referral Center of Kalaban Coro Koulikoro Mali Private Practice for Family and Emergency Medicine Casablanca Morocco Division of Nutrition General Directorate of Health and Public Hygiene Bamako Mali Administration Department Health Referral Center of Djenne Mopti Mali Administration Department Health Referral Center of Douentza Mopti Mali Administration and Planning Department Regional Health Directorate Mopti Mali Division of Health Department Regional Health Directorate of Mopti Mopti Mali Golden Life American Hospital Bamako Mali Department of Public Health Faculty of Medicine and Odontostomatology University of Sciences Techniques and Technologies of Bamako Bamako Mali

Introduction: Malnutrition is a major public health problem in Mali, despite the efforts of the government, its technical and financial partners. The aim of this study was to evaluate the integrated management program for acute malnutrition (IMPAM). Methodology: This was a descriptive cross-sectional study that took place from January to December 2020 in the Douentza health district. The study included anyone with at least one malnourished child aged 6 to 59 months in their care who agreed to take part in the study, community health center staff who had given their consent, and the URENI manager at the Douentza reference health center. Data collected via questionnaires were entered into Excel and then analyzed using Epi-Info version 7 software. Results: A total of 138 acutely malnourished children aged 6 - 59 months, including 71 girls (51.45%), 138 accompanying mothers and 11 health workers, were included in our case study. Among the malnourished, 54.34% were in the 12 - 23 months age group and 69.57% had the severe form. 93% of the mothers interviewed were satisfied with the care provided, and all the health staff interviewed stated that community conflicts had an impact on IMPAM’s activities. Cure rates were 81% in Moderate Outpatient Nutritional Recovery and Education Unit (URENAM), 84% in Severe Ambulatory Nutritional Recovery and Education Unit (URENAS) and 92% in Recovery and Intensive Nutritional Education Unit (URENI). Drop-out rates were 19% in URENAM, 16% in URENAS and 0% in URENI. The death rate was 8% in URENI and 0% in URENAM and URENAS. Conclusion: This study confirms the high prevalence of malnutrition in the district (10.54%). It also reveals that factors such as inter-community conflict and insecurity have seriously affected the IMPAM program.

关键词： Care Acute Malnutrition Children Aged 6 - 59 Months IMPAM Douentza

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Migration of a Progestin Implant into a Pulmonary Artery: Observation of a Case at the Reference Health Center of Commune III of the District of Bamako in Mali

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Open Journal of Obstetrics and Gynecology 2024年第9期14卷 1431-1436页

作者： Hamady Sissoko Souma Kodio Hamidou Albachar Cheickna Sylla Salif Diarra Sidy Moctar Diakité mohamed Traoré Souleymane Traoré Ibrahim Fomba Ouncoumba Diarra Nana Bah Drissa Diarra Mahamoudou coulibaly Bocary Sidi Koné Hawa Samaké Ahmadou coulibaly Mamadou Traoré Seydou Z. Dao Sitapha Dembélé Samou Diarra Konimba Koné Alou Samaké Sanogo Siaka Amara Reference Health Centre of Commune III of the District of Bamako Bamako Mali Department of Gynecology and Obstetrics Gabriel Toure University Hospital Center in Bamako Bamako Mali Department of Gynecology and Obstetrics Kalaban Coro Reference Health Centre Bamako Mali mohamed VI Perinatal Clinic Bamako Mali Reference Health Centre of Commune V of the District of Bamako Bamako Mali Point-G Obstetrics and Gynecology Department of University Hospital Center Bamako Mali Reference Health Centre of Commune II of the District of Bamako Bamako Mali H Department of Gynecology and Obstetrics of the Fousseyni Daou Hospital in Kayes Kayes Mali Reference Health Centre of Commune VI of the District of Bamako Bamako Mali

It was a 36-year-old patient, 5th Pregnancy, 5th Delivery, 4 live children, and I deceased, had a consultation in the department for the removal of implants. Questioning revealed that she had had the implant three years ago without medical follow-up. It was in view of the difficulties in extracting the capsule that the chest X-ray and CT scan carried out concluded that the implant had migrated into a branch of the left pulmonary artery. Therapeutic abstention has been the attitude of cardiovascular surgeons.

关键词： Migration Implant Pulmonary Artery Bamako

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Maternal Fetal Prognosis: Pregnancy and Delivery in Women of 40 Years Old and Over in a Second Reference Hospital in Bamako

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Open Journal of Obstetrics and Gynecology 2024年第4期14卷 509-519页

作者： Samaké Alou Diarra Lasseny Keita Mamadou Haidara Dramane Haidara Mamadou Diallo Mamadou Konaté Moussa Maiga Mariam mohamed Saydi Ag Med Elmehdi Elansari Kassogue Djibril Seydou Zana Dao Samake Hawa Konate Karim Dembele Bertin coulibaly Moussa Mariko Seydou Collarete Dohino Reference Health Center of Commune VI of the Bamako District Bamako Mali Bamako Dermatology Hospital (BDH) Bamako Mali Kalaban Coro Reference Health Center Bamako Mali Timbuktu Hospital Timbuktu Mali Reference Health Center of Commune II of the Bamako District Bamako Mali Reference Health Center in Commune V of the Bamako District Bamako Mali National Institute for Training in Health Sciences Bamako Mali Mali Hospital Bamako Mali

Introduction: Late pregnancies are considered a public health problem linked to maternal mortality due to their complications. These risks, which worsen with maternal age, should be better known and taken into account in monitoring these pregnancies. Objective: To evaluate the impact of age on the prevalence of obstetric and neonatal complications among parturients of 40 years old and over. Methodology: This was an 11-year retrospective analytical case control study from January 1, 2007 to December 31, 2017. The study population was female patients of 40 years old or older for cases and female patients younger than 40 years of control case. Results: In total, we collected 640 cases of parturients of 40 years old and over out of a total of 84,234 deliveries during the study period;i.e. a frequency of 0.76%. Spontaneous abortion increased in patients of 40 and over with 8.28%. Hypertension and diabetes were higher of women of 40 and over, 52.65%. Concerning the method of admission: 55% of parturients of 40 and over were referrals. Incidents occurring among women of 40 and over were more pronounced than in control cases. Complications during vaginal delivery, cervical tear, perineal tear, uterine dehiscence and uterine rupture are high in our cases, i.e. 11.88%;3.59%;2.19%;2.66. During our study, depending on the type of delivery, the cesarean rate was much higher among women of 40 and over than among control cases, i.e. 54.22% versus 12.24%. Hemorrhages in the 3rd trimester were the main indications for cesarean section. Hemorrhages in the 3rd trimester were more frequent with women of 40 and over, i.e. 10.47%;5.94% versus 1.74% and 0.42%. As for the different types of malformations in parturients, women under 40 years old fetal malformations were absent in 92.29%, on the other hand they were more frequent in patients with 40 years and over, i.e. a normal frequency of 36.72%. Conclusion: Pregnancy at a late age exposes the elderly patient and the newborn to several ri

关键词： Advanced Maternal Age Childbirth Risk Mali

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