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Open Journal of Optimization 2021年第1期10卷 13-27页

作者： Ibrahima Diedhiou Salimata Gueye Diagne Fambaye Ngom Sow Coumba Diallo Diop Ndiaga Thiam gabriel birame ndiaye Aissatou Fall Ndoye Gueye Cheikh Anta Diop University of Dakar (UCAD) Dakar Senegal Department of Mathematics and Computer Science (DMI) UCAD Dakar Senegal Oceanographic Research Center Dakar Thiaroye (CRODT) Dakar Senegal Direction of Maritime Fisheries (DPM) Dakar Senegal

Small coastal pelagic fish are one of the fish families most affected by sea fishing. This man-made phenomenon leads to an imbalance in the marine and coastal ecosystem and is one of the main causes of migration north and offshore of the ranges. We used the ordinary differential equations to model the interactions existing between small pelagic resources and fishermen. Modelling follows the same of the Lotka-Volterra equations with a difference in the number of variables. This study confirmed the instability of the marine ecosystem. The objective is first of all to model a system of three interacting individuals composed of two distinct types of predators and two types of prey, and then optimise this interaction with the aim of conserving biodiversity in the ecosystem under study. Determining the Jacobian matrix made it possible to calculate the reproduction rate basic (R0). The study of the strong connectedness has made it possible to reduce the number of variables without losing the objective of the study. A computer program implemented on the language computer python facilitated the visualisation of the results.

关键词： Small Coastal Pelagics Ordinary Differential Equations Modelling Optimisation Basic Reproduction Rate

Phenotypical Aspects of a Familial Syndromic Retinitis Pigmentosa

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Open Journal of Ophthalmology 2024年第2期14卷 168-173页

作者： Irma Eneida Dos Santos Joseph Matar Mass ndiaye Mariama Diambone Badji Alioune Abdoulaye Ndongo Gerauld Akpo Jean Pierre Diagne gabriel Karold Mendy Mouhamed Attye Aboubacry Sadikh Sow Elhadji Amadou Ba Paule Aida Ndoye Roth Ophthalmology Department of Aristide Le Dantec Hospital Dakar Senegal Pediatric Department of Aristide Le Dantec Hospital Dakar Senegal Radiological Imaging Department of Aristide Le Dantec Hospital Dakar Senegal Ophthalmology Department of Abass Ndao Hospital Dakar Senegal

Aim: To report a familial case of syndromic retinitis pigmentosa identified at Aristide Le Dantec Hospital in Dakar and to describe their clinical characteristics ophthalmic. Observation: We report a sibling group of nine children, four died at a young age from unknown causes. Three children were affected by retinitis pigmentosa, two cases were syndromic. A history of nyctalopia was found in all three affected children. The mean age of onset of decreased visual acuity was 6.6 years. Patient 1 affected by syndromic retinitis pigmentosa had an extraocular sign of cystic dilation of the main bile duct. Patient 2 had myoclonic epilepsy, psychomotor retardation, and the molar tooth sign on cerebral MRI (highly suggestive of Joubert syndrome). The third child had isolated retinitis pigmentosa. Ophthalmological examinations (fundus examination, electroretinogram, and visual evoked potentials) and pediatric examinations in the remaining two children were normal. Discussion and Conclusion: Retinitis pigmentosa is a rare degenerative disease that can be associated with several other malformations, highlighting the importance of screening for associated conditions. It presents a grim functional prognosis and a life prognosis dependent on extraocular manifestations. Molecular biology (karyotyping, next-generation sequencing) could have identified the implicated genes and allowed for a formal diagnosis and genetic counseling.

关键词： Retinitis Pigmentosa Syndromic Heredity Ciliopathy

Early Prosthetic Valve Endocarditis with Mycobacterium Tuberculosis after Mitral Valve Replacement: A Case Report

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World Journal of Cardiovascular Surgery 2024年第3期14卷 33-40页

作者： Papa Amath Diagne Mory Camara Papa Ousmane Ba Momar Sokhna Diop Moussa Samba Abdou Lahad Mbengue Jean Claude Ndiogou Dione Myriam Bizrane Marième Soda Mbaye Moussa Seck Diop Toudiani Malam Kaka Papa Salmane Ba Papa Adama Dieng Amadou gabriel Ciss Assane ndiaye Cardiovascular and Thoracic Surgery Department FANN National University Hospital Dakar Senegal

Background: Tuberculous endocarditis is a rare but serious complication of heart valve replacement surgery. We report the case of a 24-year-old patient, who presented with tuberculous endocarditis after mechanical mitral valve replacement, with a favorable clinical course following anti-tuberculosis treatment. Case Presentation: We report a 24-year-old male patient, admitted to the cardiac surgery department of the Fann Hospital (Dakar, Senegal), for the management of severe mixed (rheumatic and endocarditic) mitral insufficiency with associated tricuspid insufficiency. He had a history of recurrent angina and polyarthralgia in childhood, was hospitalized several times for refractory global cardiac decompensation, and for a suspected infective endocarditis a month before his admission. On admission, the clinical examination revealed signs suggestive of mitral and tricuspid insufficiency. Transthoracic echocardiography revealed severe post-endocarditic mitral insufficiency with A3 amputation, highly mobile 15 mm vegetations on the free edge of the large valve, moderate tricuspid insufficiency, and severe pulmonary artery hypertension. Mechanical mitral valve replacement and tricuspid valve annuloplasty using autologous pericardial strip were performed via median sternotomy. After ten days, the patient presented with global cardiac decompensation associated with a clinico-biological infectious syndrome, and tans-oesophageal echography revealed an abscess at the sinotubular junction, communicating with the aorta. A thoraco-abdomino-pelvic CT scan was done, which revealed a bilateral alveolar-interstitial syndrome with mediastinal lymphadenopathy. Anti-tuberculosis treatment with RHZE was initiated for 06 months. The clinical course was favorable. Conclusion: Tuberculous endocarditis in prostheses is a serious complication of heart valve replacement surgery, which may evolve favorably under medical treatment.

关键词： Tuberculous Endocarditis Prosthetic Valve Endocarditis Mycobacterium Tuberculosis

The Configuration of the Femoral Arterial Bifurcation’s Influence on Its Atherogenesis

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Forensic Medicine and Anatomy Research 2020年第2期8卷 45-53页

作者： Magaye Gaye Papa Adama Dieng Ainina ndiaye Racky Wade Sidy Diop Ndeye Fatou Sow Papa Amath Diagne Souleymane Diatta Salmane Ba Mourad Boufi Assane ndiaye Amadou gabriel Ciss Abdoulaye ndiaye Laboratory of Anatomy and Organogenesis-FMPO-UCAD Dakar Senegal Thoracic and Cardiovascular Surgery Department-Fann CHNU Dakar Senegal Vascular Surgery Department North Hospital of Marseille Marseille France Laboratory of Anatomy and Organogenesis-UAS Ziguinchor Ziguinchor Senegal

Several theories point to the influence of the geometry of femoral arterial bifurcation in the formation and evolution of atherosclerosis plaques at the level of common, superficial and deep femoral arteries. The objective of this study is to correlate the degrees of calcifications of the femoral tripod with different morphological parameters, namely conicity, tortuosity, proximal and distal diameters of the arteries and angles between the common femoral artery (CFA) and the superficial femoral artery (SFA) and the profound femoral artery (PFA) and the superficial femoral artery. The results showed that only the tortuosity of the common femoral artery influences the formation of atherosclerosis plaque. These results allow us to predict the degree of calcification of the femoral tripod based on the tortuosity of the common femoral artery.

关键词： Tortuosity Calcification Atherosclerosis Femoral Arterial Bifurcation

Small Cell Lymphoma of the Gastrocnemius Muscle: A Case Report

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Surgical Science 2023年第4期14卷 303-308页

作者： Abdoul Kadri Moussa Layes Touré Kalifa Coulibaly Mahamadou Diallo Mamadou Bassirou Traoré Cheick Oumar Sanogo Laurent Désiré Ndzié Essomba Madani Ly Aboubacar Sidiki ndiaye Safiatou A. Touré Bakarou Kamaté Orthopedics-Traumatology Department Gabriel Touré University Hospital Bamako Mali Orthopedics-Traumatology Department of Sikasso’s University Hospital Sikasso Mali Orthopedics-Traumatology Department of Kati’s University Hospital Kati Mali Medical Oncology Department of Mother-Child Luxembourg University Hospital Bamako Mali Medical Imaging Service Faculty of Medicine and Odontostomatology Bamako Mali Anatomy-Cytology-Pathology Department of the Point G University Hospital Bamako Mali

Introduction: The primary localization of non-Hodgkin lymphoma of the muscle is rare. Only the biopsy allows the certainty diagnosis. The aim was to report a first case of small cell lymphoma of the gastrocnemius in Mali and to do a review of the literature. Clinical Observation: It was about a 34-year-old woman who consulted 3 months after the onset of symptoms for swelling and pain in the left calf. On clinical examination there was a hard, painful and warm mass in the left calf, with paresthesias in the tibial nerve territory associated with partial functional impotence of the leg. The ultrasound revealed a hyper echogenic and heterogeneous non-vascularized mass of the left gastrocnemius muscle measuring 65 × 45 × 40 mm non-vascularized on color Doppler and pulsed in favor of myositis. Magnetic resonance imaging (MRI) concluded in a well-limited heterogeneous cystic mass in the left gastrocnemius muscle respecting the bone of benign appearance: remodeled Baker’s cyst? Considering the radioclinical unconformity, thoraco-abdominal CT was performed and revealed pulmonary metastasis. The biopsy carried out concluded with a small cell lymphoma of the gastrocnemial muscle. Marginal resection was performed associated with adjuvant chemotherapy. The advancement at 9 months was satisfactory.

关键词： Small Cell Lymphoma Marginal Muscle Gastrocnemius Excision Adjuvant Chemotherapy Evolution Mali

Indications and Results of Repair of the Rhumatismal Valve in Children in Senegal concerning 63 Cases

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World Journal of Cardiovascular Surgery 2020年第5期10卷 51-58页

作者： Momar Sokhna Diop Papa Amath Diagne Ndeye Fatou Sow Papa Salmane Ba Magaye Gaye Pape Ousmane Ba Souleymane Diatta Moussa Seck Diop Mareme Soda Mbaye Pape Adama Dieng Amadou gabriel Ciss Assane ndiaye Thoracic and Cardiovascular Surgery Center Cheikh Anta Diop University Dakar Sénégal

In Africa, acute rheumatic fever is endemic. Cardiac involvement is one of the most common complications in the form of valvular heart disease representing all damages to the heart valves. It is in this perspective that we realized this study whose general objective was to evaluate the results of mitral repair surgery in children in Senegal and the specific objective was to state the indications for mitral repair surgery and assess the results in terms of morbidity and mortality. This is a retrospective and analytical monocentric study, in the thoracic and cardiovascular surgery department of FANN National University Hospital Center in Dakar. It took place over a period of 30 months. All the patients who underwent mitral surgery, aged less than 18 years were included. The total number of patients was 63, including 39 girls and 24 boys, a sex ratio of 0.62. The average age at the time of the surgery was 12 years old [5 - 17]. The functional symptomatology was dominated by the dyspnea found in all the patients. Cardiac ultrasound was diagnosed with mitral regurgitation in all patients. For all surgical procedures, the approach was a vertical midline sternotomy. The mitral valve was approached by left atriotomy in 40 patients (63.5%) and by transseptal way in 23 patients. All patients had undergone mitral valve repair associated or not with either aortic valve repair in 9 patients (14.2%), aortic valve replacement in 3 patients (4.8%), or one tricuspid valve repair in 31 patients (49%). The average duration of intubation was 6 hours [2 - 52]. The average length of stay in intensive care was 2 days. Postoperative complications have been observed. Surgery was performed in 10 patients with 3 mitral valve replacements, 2 aortic valve replacements, a double mitral and an aortic valve replacement associated with a tricuspid repair and in 4 cases a perfection of their mitral repair. Early and late surgical mortality was zero. The average follow-up time for our patients was 9

关键词： Mitral Valve Repair Acute Rheumatic Fever Senegal

Left Pyelic Bifidity and Ectopic Ureteral Superolateral Intravesical Homolateral Ectopic Junction Revealed by a Urinary Calculus Apropos of a Case at the Pasteur Clinic

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Open Journal of Medical Imaging 2022年第3期12卷 123-130页

作者： Abdoulaye Kone Oucoumba Diarra Mamoudou Camara Youssouf Kone Abba Ata Omar Moussa Traore Ibrahima Coulibaly Moussa Konate Kassim Sidibe Toumin Camara Youssouf Diawara Cheick Oumar Toure Abdoulaye Mody Camara Salia Coulibaly Mahamadou Diallo Adama Diaman Keita Aboubacar S. ndiaye Siaka Sidibe Faculty of Medicine and Odontostomatology Bamako Mali Medical Imaging Department of the University Hospital of Point G Bamako Mali Radiology Department of CSREF Commune III Bamako Mali Medical Imaging Service Mother Child Hospital Luxembourg Bamako Mali FSTS Gamal Abdel NasserConakry Guinea Radiology Department of the Jacques Boutard Hospital Saint-Yrieix-la-Perche France France Medical Imaging Department of the Pasteur Polyclinic Bamko Mali DCSSA Bamako Mali General Medicine Department of the Siguiri Prefectural Hospital Siguiri Guinea Medical Imaging Service Health Center of Ref Commune IV Bamako Mali Medical Imaging Department of Mali Hospital Bamako Mali Medical Imaging Department of KATI Hospital Bamako Mali Medical Imaging Department of gabriel TOURE Hospital Bamako Mali

Introduction: Malformations of the excretory tract are abnormalities due to a disorder of embryogenesis. According to some authors, their frequency varies from 0.30 to 5.25 per 1000. The aim of this study was to highlight the CT uroscan aspect of pyelic bifidity with intravesical ureteral ectopic junction revealed by a urinary calculus and to explain the interest of CT uroscan in the management of urinary pathologies. Result: We report the observation of a 37-year-old overweight patient with a body mass index equal to 28, a history of surgery and extracorporeal litho-thipsis dating back 10 years. He was referred to the Imaging Department in the context of renal colic. The uroscanner made it possible to highlight a left pyelic bifidity associated with an ectopic abutment of the left ureter on the superolateral wall of the bladder, a calculation in the left ectopic ureteral meatus measured at 4 mm in axial diameter. He noted upstream of these lesions, a uretero-pyelo-calicielle dilation on double homolateral pyelon. On late cuts, a slight delay in left renal excretion was noted. The right kidney was also the site of a hyperdense calculation of 1257 HU density and measured 4 mm in transverse diameter with a non-obstructive appearance. Due to a lack of means, our patient was subjected to oral medication, hygiene and dietary rules and rigorous monitoring. Conclusion: At the end of this study, the uroscanner is presented as the reference examination to better explore urinary pathologies. At the same time, it makes it possible to carry out a study of the organs surrounding the urinary tract. Always think about the association of several urinary pathologies each time you see a patient for renal colic.

关键词： Bifidity Pyelic Uroscanner Ectopia Lithiasis

Uro-Scanner Aspects of Bladder Tumours at the Mali Hospital about 17 Cases

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Open Journal of Medical Imaging 2021年第4期11卷 93-103页

作者： Mody Abdoulaye Camara Mohamed Maba Traore Hawa Diarra Adama Dao Boubacar Mama Toure Mamadou ndiaye Salia Coulibaly Kone Abdoulayye Mariko Mahamane Cisse Issa Konate Moussa Ilias Guindo Konate Zakaria Nouhoum Simpara Seydou Coulibaly Néné Koumaré Siaka Sidibe Medical Imaging Department of the Mali Hospital Bamako Mali Medical Imaging Department at the CHU gabriel Touré Bamako Mali Bamako Infirmary Hospital Bamako Mali Medical Imaging Department of the CHU Point G Bamako Mali Medical Imaging Department of CHME Luxembourg Bamako Mali Medical Imaging Department of the CHU of Kati Bamako Mali Pediatric Unit of Reference Health Center of Commune VI Bamako Mali

Introduction: Bladder tumours are frequent, have a poor prognosis and are the second most common genitourinary tumour in men. In Mali, recent statistical data on the prevalence of bladder tumours show a progression with 6.71% in 2006. The euro scanner is used in the diagnostic workup. The work was initiated in order to specify the role of the scanner in the diagnosis of these tumors. Patients and Methods: Prospective descriptive study was carried out in the medical imaging department of Mali Hospital from February to November 2018. Were included any patient with a bladder tumour on euro scanner. The patients had benefited from a preliminary preparation and a renal biological assessment in order to eliminate renal insufficiency. Our examinations were performed with a Siemens 16-slice scanner. These were axial slices performed without, with iodine injection from the pulmonary base to the pubic bones. Results: We had collected 17 patients out of 541 scans i.e. a frequency of 3.76%. The age range of 21 to 40 years was 58.8% with an average age of 25 years. The antecedents (ATCD) found were urinary bilharzia (47%) and smoking (17%). The clinic was dominated by haematuria. It was associated with a bladder mass (52%) and dysuria (23.52%). The CT scan showed a budding appearance, a size greater than 3 cm (82%), infiltration of peri-vesical fat (47.05%), and adenopathy (94%). Associated lesions were: utero-hydronephrosis (58.82%) and metastases (bone and liver in 11.76% of cases each). Conclusion: They are frequent and the history of urinary bilharziasis remains the main risk factor in endemic countries. CT scans are essential in the management of this disease. The diagnosis of certainty remains histology.

关键词： Bladder Tumour Uro-CT Mali Hospital