Dynamique de la prise en charge thérapeutique et préventive de la Covid-19 chez les patients adultes vulnérables / Dynamics of therapeutic and preventive management of Covid-19 in vulnerable adult patients

La pandémie à Covid-19 continue sa progression et interpelle aujourd'hui toute l'humanité particulièrement le corps médical. A la date du 30 Juin 2020, le monde entier compte 10185374 cas confirmés avec 563862 décès [1]. La recherche scientifique intense a pu rapidement séquencer ce virus à ARN, partager sur sa clinique et son évolution. Mais six mois après il persiste encore beaucoup d'inconnues concernant son pouvoir pathogène, sa physiopathologie mais surtout sa prise en charge thérapeutique particulièrement chez les sujets âgés ou ayant des facteurs de risqué qui ont une mortalité significativement plus élevée [1, 2, 3]. La Covid-19 pose ainsi un problème de prise en charge thérapeutique chez les sujets vulnérables. Cette situation préoccupante pour tous, justifie la poursuite de la réflexion, de la recherche et surtout le partage d'expériences pour une meilleure prise en chargechez ces patients à risque

[The primary pulmonary MALT lymphoma: a rare lung tumor]. / Le lymphome pulmonaire primitif de type MALT: une tumeur pulmonaire rare.

The primary pulmonary lymphoma is a rare disease, representing 0.5 to 1% of the malignant lung tumors. In our countries, in spite of the increasing prevalence of the pulmonary tumors, aggravated by smoking and environmental factors, any case report of the primary pulmonary lymphoma is notified. We report a confirmed case of MALT lung lymphoma that is managed in our hospital. Mr. S.B., 68-year-old man, not smoking, without particular professional exhibition, is admitted for a chronic cough with blood-streaked sputum, dyspnea, chest pain and loss of weight. His symptomatology is evolving for 4months. In the examination, the general health was passable and he presented a pulmonary condensation syndrome at right. The physical examination of others systems was normal. There was a biological inflammatory syndrome. The bacteriological examinations of the bronchial expectorations were negative. The chest CT showed bilateral alveolar opacities at the upper, with attraction of the fissures, without nodes. The bronchoscopy showed anomalies of the bronchial mucous membrane in 2 superior lobes. The perendoscopiques biopsies confirmed a MALT lung lymphoma. We did not find other localizations. Chemotherapy was proposed to our patient with favorable evolution. The MALT primary lung lymphoma must not be underestimated. Clinical manifestations and radiological characteristics are no specific and it's necessary to eliminate a lung cancer or tuberculosis in our countries. The difficulties of their diagnostic are intensified by the not availability of an adequate technical tray.

[Adult-onset Still's disease: case report in Dakar, Senegal]. / Maladie de Still de l'adulte: une observation à Dakar (Sénégal).

Adult-onset Still's disease is a uncommon form of inflammatory rheumatism. It has rarely been reported in black Africa. The purpose of this report is to describe a case in a 49-year-old woman from Dakar, Senegal.

[Nocardiosis: 4 cases in Senegal]. / Nocardiose: 4 observations au Sénégal.

The purpose of this report is to describe four cases of nocardiosis observed over an eight-year period in medical units of Principal Hospital in Dakar, Senegal. It is a rare infection occurring mainly in people with weakened immune systems. Pulmonary forms are predominate and clinical and laboratory presentation can mimic pulmonary tuberculosis. Diagnosis should be suspected in patients presenting pulmonary infections and negative sputum bacilloscopy. Nocardia bacteria should be identified before starting antibiotic treatment. Patients require long-term antibiotic treatment with third generation cephalosporins or sulfamethoxazole-trimethoprim.

[Permanent deafness following typhoid fever: case report from Dakar, Senegal]. / Surdité définitive au décours d'une fièvre typhoïde une observation a Dakar (Sénégal).

Severe infections due to Salmonella typhi and Salmonella paratyphi are still common in sub-Saharan Africa where many patients are empirically treated for malaria. In addition to the usual clinical signs and complications of typhoid fever, clinicians practicing in high incidence areas must be aware of less common manifestations. The purpose of this report is to describe a case involving an 18-year-old boy who presented with quinine-resistant febrile coma. The final diagnosis was typhoid fever. After recovery the patient presented complete deafness. Discussion raises the question of whether deafness was secondary to typhoid fever or to drug therapy.

[Shoulder pain revealing tuberculosis of the humerus]. / Une épaule douloureuse révélant une tuberculose osseuse inhabituelle.

Tuberculous spondylitis is the most common form of musculoskeletal tuberculosis. However, extraspinal manifestations have been described with tuberculosis of the wrist, femur, foot or shoulder, as in the patient presented. Because of an often-indolent clinical presentation, the diagnosis is delayed and antituberculous treatment is not able to prevent serious bone destruction.

Hepatitis B, C seroprevalence and delta viruses in HIV-1 Senegalese patients at HAART initiation (retrospective study).

The aim of this study was to determine hepatitis co-infection in a cohort of HIV infected patients at their inclusion in the Senegalese Initiative of ART Access. B, C, and D Hepatitis viruses serological markers were checked retrospectively on 363 stored plasma. For HBV, the Abbott laboratories equipment IMx was used to detect HBs Ag and anti Core Ab on negative HBs Ag samples. For HDV, anti Delta Ab was performed using the Abbott Murex Kit on all HBs Ag positive samples. For HCV, anti HCV Ab was detected by IMx as double screening test and confirmed by INNO-LIA(TM) HCV Core of Innogenetics laboratories. The statistical analysis was done with STATA V8. The study population was composed of 164 men and 199 women aged between 16 and 66 years. The immune and virological markers averages at their enrollment were 154 cell/mm(3) for TLCD4+ (n = 355 patients) and 4.9 log for viral load (n = 277 patients). HBs Ag was found in 61 patients or 16.8% and the prevalence of anti-HBc Ab was 83.2% (252/295). 2 patients or 3% on HBs Ag positive sample presents HBV/HDV co-infection Ab anti HCV was detects in 6 patients or 1.6% after confirmation and 2 patients had triple infection with HBV. These results showed that the prevalence of HBV and HCV in the population of persons living with HIV/AIDS in Senegal is similar to that found in the general population. Our data indicated that hepatitis pathology in the PLwHIV was essentially due to HBV. Further studies are needed to diagnose occult hepatitis in order to set up therapeutic strategies taking into account co-infections by hepatitis viruses in the ART programmes.

[Poster presentations]. / La communication affichée.

Posters have become an essential tool for dissemination of study findings at medical meetings. By presenting a quick snapshot, posters can be an effective means of communicating the main findings of the research quickly and of stimulating rewarding exchanges with the people in attendance. Success depends on catching and holding the attention of passing attendees long enough to establish contact and share knowledge and experience. The purpose of this article is to provide a few guidelines and techniques for preparing and presenting effective and clear research posters at scientific meetings.

[Empiric antituberculous therapy in patients with unexplained exsudative pleural effusion. Is it valid in Senegal?]. / Le traitement antituberculeux présomptif est-il licite dans la pleurésie lymphocytaire exsudative inexpliquée au Sénégal?

AIM: Pleural biopsy and adenosine deaminase activity are not available at our center and the treatment begins without substantiation diagnosis in patients with tuberculous pleural effusion (PE). METHODS: In order to evaluate the validity of an empiric antituberculous therapy in exsudative PE with high prevalence of lymphocytes, we conducted a retrospective study during 1 year. Patient was enrolled if no signs of tuberculous infection, pneumonia or cancer were present. RESULTS: During 1 year, 38 patients were enrolled (23 males, mean age=36 years). PE was major (> 2/3 of the lung) in 14 cases, moderate (between 1/3 and 2/3) In 18 cases and minor (<1/3) in 6 cases. Tuberculous contagion was observed in 10 patients. Tuberculinic test was positive in all patients (12-24 mm). Clinical and radiological cure was obtained in 37 cases, except 1 patient who died from acute heart failure. No recurrence of PE was observed after 1 year follow-up. CONCLUSION: In our endemic areas, empiric antituberculous treatment seems to be an effective strategy in patients with exsudative PE.

[Using PubMed subject headings to enhance reference searches]. / Utiliser les descripteurs dans PubMed pour améliorer une recherche bibliographique.

The PubMed search engine is an essential tool to stay abreast of the latest medical literature on specific topics. While the basic search techniques are common knowledge, the ability to use medical subject headings properly is an essential in obtaining valuable references. The purpose of this article is to explain what medical subject headings are and how they can be used to improve the results of reference searches in PubMed.

[Diabetes mellitus in sub-Saharan Africa: epidemiological aspects and management issues]. / Le diabète sucré en Afrique subsaharienne aspects épidémiologiques, difficultés de prise en charge.

In contradiction with long-standing conventional wisdom that it is a rich country's disease, diabetes mellitus is increasingly a major concern in developing countries, especially in sub-Saharan Africa. Care facilities have not kept pace with the sharp increase in diabetes mellitus. The WHO has predicted a worldwide rise in the prevalence of diabetes that is expected to affect 300 million people by 2025. This progression is more flagrant in developing countries particularly in sub-Saharan Africa. In these countries, the expansion of diabetes is part of a broader epidemiological transition from transmissible diseases to non-transmissible diseases. A number of factors are causing this transition including aging of the population, sedentary lifestyle, and obesity. Aside from obesity, arterial hypertension is the main cardiovascular risk factor associated with diabetes. Alone or in association with other risk factors, diabetes mellitus accounts for high morbidity especially due to cardiovascular and kidney complications. Management in sub-Saharan Africa faces a number of issues: poor understanding of the extent of the problem, high cost of medications, socio-economic setting that is poorly suited to maintaining a proper diabetic diet, and limitations in infrastructure and personnel. The rapid increase in the prevalence of diabetes mellitus in sub-Saharan Africa is a serious challenge. There is an urgent need to obtain accurate figures about the extent of the pandemia as a basis for training an adequate number of health care personnel and implementing sufficient resources to allow local management. Meeting this challenge will require enhancement of the awareness and participation of all players involved in public health.

[Lung cancer in Senegal]. / Le cancer bronchique au Sénégal.

In Africa the incidence of lung cancer is rising rapidly. The purpose of this prospective study was to analyze clinical, therapeutic, and prognostic features of lung cancer patients treated at the Principal Hospital in Dakar between 2002 and 2007. A total of 72 cases were compiled over the 5-year study period. In 88% of cases the patient was a male smoker with a mean age of 59.2 years. Histological samples were obtained in 79.1% of cases by bronchial fibroscopy (n=33), CT-guided transthoracic needle biopsy (n=17), or from a metastatic site (n=7). The histological diagnosis was squamous cell carcinoma in 23 cases, adenocarcinoma in 14, large-cell carcinoma in 17, small-cell lung cancer in 2, and bronchiolo-alveolar cancer in 1. Tumor staging demonstrated grades I-II in 6 cases, grade II in 17, and grade IV in 49. Symptomatic management was performed in 68% of patients. In the remaining cases management consisted of chemotherapy in 22 cases, radiotherapy for pain relief in 5, and surgery in 1. Ten patients were lost from follow-up. Median survival was 7 or 3 months depending on whether or not chemotherapy was performed. The much higher rate of histological diagnosis than in the sub-region is due mainly to the availability of trained personnel with access to bronchial endoscopy and CT-scan needle biopsy since September 2003. Administration of cytotoxins is feasible but the cost is excessive due to the lack of universal health care coverage: two-thirds of cases were abandoned whereas chemotherapy significantly improved median survival by 4 months (p < 0.0001). Prognosis of the disease is poor because management is undertaken at an advanced stage. Lung cancer is a health issue in Dakar, Senegal. It is urgent to develop therapeutic standards adapted to the African socio-economic setting as well as an anti-tobacco prevention policy.

Le cancer bronchique au Senegal

En Afrique; l'incidence du cancer bronchique (CB) est en forte progression. Nous avons realise une analyse prospective des caracteristiques cliniques; therapeutiques et evolutives des CB observes a l'Hopital Principal de Dakar entre 2002 et 2007. En 5 ans; 72 cas ont ete colliges. Dans 88des cas; il s'agit d'un fumeur de sexe masculin; age en moyenne de 59;2 ans. L'histologie est obtenue dans 79;1des cas apres fibroscopie bronchique (n=33); ponction transthoracique scano-guidee (n=17) ou a partir d'un site metastatique (n=7). Il s'agit de 23 carcinomes epidermoides; 14 adenocarcinomes; 17 carcinomes a grandes cellules; 2 CB a petites cellules; 1 cancer bronchiolo-alveolaire. Ces tumeurs se repartissent en 6 stades I-II; 17 stades III et 49 stades IV. La prise en charge est symptomatique pour 68des malades ; dans les autres cas; elle associe : chimiotherapie (n=22); radiotherapie antalgique (n=5); chirurgie (n=1). Dix patients sont perdus de vue. La survie mediane est de 7 mois ou de 3 mois; selon qu'une chimiotherapie est administree ou non. Le taux de confirmation histologique largement superieur aux donnees dans la sous-region illustre l'apport d'une unite d'endoscopie bronchique entrainee et l'acces a la ponction scanno-guidee depuis septembre 2003. L'administration de cytotoxiques est possible mais trop couteuse faute de couverture sociale generalisee : 2/3 des indications sont abandonnees alors que la chimiotherapie ameliore significativement la surviemediane de 4 mois (p0;0001). Le pronostic reste severe car la maladie est prise en charge a un stade avance. Le CB est une realite a Dakar. Il est desormais urgent de promouvoir des standards therapeutiques adaptes au contexte socio-economique africain; et une politique de prevention du tabagisme

Le diabete sucre en Afrique subsaharienne. Aspects epidemiologiques; difficultes de prise en charge

Contrairement a une vieille opinion considerant le diabete sucre comme une maladie des pays riches; cette affection constitue de plus en plus une preoccupation majeure dans les pays en developpement et particulierement en Afrique subsaharienne. On note une croissance galopante de sa prevalence alors que parallelement les structures sanitaires n'ont pas connu un developpement adapte. L'OMS prevoit une croissance mondiale de la prevalence du diabete; qui devrait atteindre 300 millions de malades en 2025. Cette evolution est plus nette dans les pays en developpement; et particulierement en Afrique subsaharienne. Dans ces pays; cette expansion s'inscrit dans une veritable transition epidemiologique des maladies transmissibles vers les maladies non transmissibles. Ce phenomene reconnait plusieurs causes dont le vieillissement de la population; la seden- tarite et l'obesite. En dehors de l'obesite; l'hypertension arterielle est le principal facteur de risque cardio-vasculaire associe au diabete. Seul ou associe aux autres facteurs de risque; le diabete sucre est responsable d'une lourde morbidite notamment cardio-vasculaire et renale. La prise en charge connait de nombreuses difficultes : une meconnaissance de l'ampleur du probleme; le cout desmedicaments; un contexte socio-economique peu propice au regime diabetique; des infrastructures et du personnel sani- taires insuffisants. La croissance rapide de la prevalence du diabete sucre enAfrique subsaharienne constitue une menace. Il est urgent de proceder a une evaluation chiffree de la pandemie diabetique; permettant la formation en nombre consequent de personnels sanitaires qualifies; et l'acquisition d'un equipement suffisant pour une prise en charge decentralisee. Ces conditions appellent la sensibilisation et la participation de tous les acteurs intervenant dans la sante publique

[Primary arterial pulmonary hypertension and sildenafil: a case report from Dakar]. / Hypertension artérielle pulmonaire primitive et sildénafil: a propos d'un cas a Dakar.

INTRODUCTION: We report our experience of using sildenafil in treatment on primary arterial pulmonary hypertension. PATIENT: This case concern a 38 years old senegalese woman. She was hospitalised for global cardiac failure with right signs predominance and grade IV dyspnea related to pulmonary hypertension. RESULTS: No evident cause of the pulmonary hypertension had been found after explorations. Adding sildénafil to her symptomatic treatment provided fast favourable evolution quantified by clinical test and Doppler-ultrasound heart examination. However the patient died three month later by cerebral hemorrhage due to overdose of antivitamine K. CONCLUSION: We suggest using sildenafil in the treatment of primary arterial pulmonary hypertension on the way going to cardio-pulmonary transplantation.

[An unusual mediastinal opacity]. / Une opacité médiastinale inhabituelle.

A 36-year old immunocompetent male from Senegal with an uneventful history was admitted for exploration of a bullous collection in the posterior mediastinum. Multifocal tuberculosis was diagnosed. Computed tomography-guided drainage removed 600 cc of caseum. The diagnosis as rupture of intrathoracic Pott's abscess complicated by a probably esophageal fistula. The clinical course was rapidly favorable with later development of mediastinal fibrosis. This uncommon case illustrates the contribution of interventional radiology recently developed in the Principal Hospital in Dakar, Senegal.

[Exercise-induced dyspnea and hilar enlargement]. / Dyspnée d'effort et gros hiles.

We report the case of a 46-year-old man with an uneventful history who was hospitalized for suspected pulmonary embolism. The chest x-ray did not reveal any parenchymatous anomaly but disclosed pseudo-tumoral enlargement of the pulmonary arteries. There was no right ventricular overload at cardiac echography and the pulmonary arterial pressure was normal. Helicoidal angioscan demonstrated aneurismal dilatation of the both pulmonary arteries, complicated by a thrombus on the right. Outcome was favorable with anticoagulation. After ruling out acquired aneurysm, the diagnosis retained was idiopathic aneurysm of the pulmonary arteries.