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Open Journal of Radiology 2018年第3期8卷 181-190页

作者： Patricia Yèkpè Djivèdé Akanni Canicius Ovidio de Souza Sonia Adjadohoun Miralda Kiki Kofi-Mensa Savi de Tovè Olivier Biaou vicentia boco vicentia boco Faculty of Health Sciences University of Abomey Calavi Cotonou Benin Department of Radiology National and University Teaching Hospital Hubert Koutoukou Maga Cotonou Benin Faculty of Medicine University of Parakou Parakou Benin Department of Radiology University Teaching Hospital of Borgou Department Parakou Benin

Objective: This study aimed to describe anatomic variants of sphenoidal sinuses and adjacent structures. Methods: A retrospective and descriptive study was carried out at The National and University Teaching Hospital Hubert Koutoukou Maga (CNHU-HKM), of Cotonou in Benin from November 1st to December 31st. A review of CT scans skull was done for the subjects aged at least 16 years old. Anatomic variants of the sphenoid sinuses and adjacent structures have been investigated. Results: 225 CT scans of skull were analyzed. The sellar type was the most common type of pneumatization of sphenoid sinuses (74.7%). Pneumatization of anterior clinoid processes of greater and lesser wings of the sphenoid and of pterygoid processes was observed in 7.1%;4.6%;3.3% and 7.3%;respectively. Protrusion of carotid canals and optic canals, maxillary and vidian nerves were observed in 48.3%;13.1%;18% and 9.5%;respectively. Conclusion: Risky anatomic variants of the sphenoid sinuses and adjacent structures are also described by CT-scan among Beninese. Before any surgery and to avoid bad outcome, a precise approach of these risky anatomic variants must be carried out by using CT-scan.

关键词： Anatomic Variants Sphenoid Sinuses Skull CT-Scan Benin

Ultrasound Contribution to the Diagnosis of Emphysematous Cystitis

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Open Journal of Radiology 2015年第3期5卷 170-175页

作者： Kofi-Mensa Savi de Tové Madina Napon Zakari Nikiema Patricia Yèkpè Olivier Biaou vicentia boco Medical Imaging Department Faculty of Medicine University of Parakou Republic of Benin Medical Imaging Unit Charles de Gaulle University Teaching Hospital Ouagadougou Burkina-Faso Medical Imaging Unit Sour&#244 Sanou University Teaching Hospital Bobo-Dioulasso Burkina-Faso Medical Imaging Department Faculty of Health Sciences University of Abomey-Calavi Cotonou Republic of Benin

Emphysematous cystitis is a severe urinary tract infection which threatens patients’ life. Thus, it requires early diagnosis and computed tomography (CT) is the reference medical exam used to address it. However, ultrasound, which is a non-ionizing and very accessible technique, may also contribute to diagnosis. The aim of this study was to illustrate the contribution of ultrasound to the diagnosis of emphysematous cystitis. We report three cases of emphysematous cystitis diagnosed by ultrasound. In all the cases, ultrasound identified basic signs showing presence of gas, including a hyperechoic cystic parietal thickening, repeat echoes and dirty shadow cones of intraluminal focus. Diagnostic confirmation was made in two cases through X-ray and in one case by means of computed tomography. Through simple basic signs, ultrasound directs most usefully towards an emphysematous urinary tract infection. CT enables a more accurate diagnostic work-up of lesions and differential diagnosis with vesico-digestive fistula.

关键词： Emphysematous Cystitis Ultrasound Computed Tomography X-Ray

Non-Traumatic Chronic Nasosinusitis Disorders: Clinical and Computed Tomodensitometric Aspects in Cotonou in Benin, West Africa

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Open Journal of Radiology 2020年第3期10卷 159-172页

作者： Patricia Yekpe Ahouansou Djivèdé Akanni Alexis Dos Santos Sonia Adjadohoun Kofi Mensa Savi de Tovè Olivier Biaou vicentia boco Radiology and Medical Imaging Department Teaching University Hospital of Hubert Koutoukou Maga (CNHU/HKM) Cotonou Benin Department of Radiology University Teaching Hospital of Borgou Department Parakou Benin Otorhinolaryngology (ENT) and Cervico Facial Surgery (CFS) Department Army Training Hospital Teaching University Hospital Cotonou Benin

Introduction: Damage to the nasal cavities and sinuses of the face concern many disciplines, especially the specialist in Otorhinolaryngology and Cervi-cal-Facial Surgery (ENT-CFS), since most symptoms have little value to direct the patient towards a precise diagnosis, radiological exploration, including three-dimensional imaging, provides diagnostic, therapeutic and follow-up support. The aim is to study the clinical and computed tomography scan as-pects of non-traumatic chronic nasosinusitis disorders at the Teaching Univer-sity Hospital of Hubert Koutoukou Maga (CNHU/HKM) in Cotonou. Materi-al and Method: It was a descriptive and analytical study with retrospective collection, carried out over a period of 36 months from January 1st, 2014 to December 31st, 2016;on 261 files of patients seen in Otorhinolaryngology (ENT) and Cervico Facial Surgery (CFS) consultating for a chronic nasosinusi-tis disorder with no trauma notion and having performed a CT scan. Results: Chronic lesions of the nasal sinus cavities accounted for 13.42% of ENT con-sultations. There was female predominance with a sex ratio of 0.85. The clinic varied, the most common signs were rhinorrhea (74%), headache (73.6%) and sneezing (38.3%). On computed tomography scan, 225 results were pathologi-cal. Sinus backfilling was in the lead with 66.7% followed by mucous thicken-ing with 60.44%, and by bone involvement in 28%. Inflammatory pathologies (82.22%) were on top of the list, followed by pseudo-tumoral pathologies (20.9%). The anterior sinus complex was the most affected (56%) with predominance of the maxillary sinuses. Conclusion: chronic nasosinusitis dis-orders are frequent in daily practice, with a varied clinic. Computed tomogra-phy scan is a major diagnostic tool that should be favored.

关键词： Chronic Nasosinusitis Disorder Computed Tomography CNHU/HKM Cotonou

Sonographic Measurement of the Optic Nerve Sheath Diameter (ONSD) and Eyeball Transversal Diameter (ETD) in Benin Healthy African Adults

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Open Journal of Radiology 2020年第3期10卷 149-158页

作者： Kofi-Mensa Savi de Tové Djivèdé Akanni Miralda Kiki Sonia Adjadohoun Godfrid Lokossou Patricia Yèkpè-Ahouansou Olivier Biaou vicentia boco Medical Imaging Department Faculty of Medicine University of Parakou Parakou Republic of Benin Medical Imaging Department Faculty of Health Sciences University of Abomey Calavi Cotonou Republic of Benin

Background: Measuring optic nerve sheath diameter (ONSD), a relatively re-cent technique, allows an indirect and non-invasive diagnosis of intracranial hypertension. The ONSD ratio to eyeball transverse diameter (ETD) increases this reliability of the technique. The objective of this study was to determine the normal ONSD and its ratio with ETD in black African adults in Benin. Methods: A descriptive cross-sectional study was conducted between May 2019 and August 2019. Ultrasound ONSD and ONSD/ETD ratio were meas-ured in 210 healthy adults received in the medical imaging department of the Borgou and Alibori University Hospital Center in Benin. The ONSD corre-sponded to the average of 12 measurements (03 horizontal and 03 vertical for each eye) taken 3 mm behind the papilla. The transverse ETD corresponded to the average of 03 measurements. Results: The mean ONSD was 4.20 ± 0.28 mm (95% CI = [4.17;4.24] mm and 95th percentile = 4.70 mm). The mean ETD was 24.25 ± 1.10 mm. The ONSD/ETD ratio was 0.17 ± 0.01 (95% CI = [0.17;0.17] and 95th percentile = 0.19). There was no difference between ver-tical and horizontal ONSD and between right and left ONSD. The ONSD and the ONSD/ETD ratio were not correlated with any of the socio-demographic and anthropometric characteristics studied (sex, age, ethnicity, weight, height, body mass index, head circumference and waist circumference). The ONSD was associated with ETD (p Conclusion: An ONSD and an ONSD/ETD ratio respectively greater than 4.70 mm and 0.19 should sus-pect intracranial hypertension. The ONSD/ETD ratio may be a better indicator of HICT because of its small variation.

关键词： Optic Nerve Sheath Diameter Eye Transversal Diameter Ultrasound Intracranial Hypertension Adult Benin

Sphenoid Sinuses Pneumatization and Association with the Protrusion of Surrounding Neurovascular Structures amongst Beninese

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Open Journal of Radiology 2018年第4期8卷 209-216页

作者： Djivèdé Akanni Canicius Ovidio de Souza Kofi-Mensa Savi de Tovè Kouassi Paul N’zi Patricia Yèkpè Olivier Biaou vicentia boco Faculty of Medicine University of Parakou Parakou Benin Department of Radiology University Teaching Hospital of Borgou Department Parakou Benin Faculty of Health Sciences University of Abomey Calavi Cotonou Benin Department of Radiology National and University Teaching Hospital Hubert Koutoukou Maga Cotonou Benin Faculty of Medicine University Félix Houphouet-Boigny Abidjan Cote d’Ivoire Institut of Cardiology Abidjan Cote d’Ivoire

Goal: The aim of this work is to study the relationship between the pneumatization of the adjacent structures of sphenoid sinuses and the protrusion of the neurovascular structures in the sinuses. Methods: A review of 225 CT scans skull was done for subjects aged at least 16 years old from November 1st to December 31st 2017. The pneumatization of adjacent structures of sphenoid sinuses and its relation with the protrusion of neurovascular structures surround the sinuses have been investigated. We used Fischer Exact test for comparison. The p value Results: Statistically significant associations were found between anterior clinoid process bilateral pneumatization and bilateral protrusion of carotid canal (p Conclusion: Compared to the literature, the prevalence of pneumatization of the adjacent structures of sphenoid sinuses was lower on Beninese than Caucasian and Asian. But there were the same correlations with the protrusion of neurovascular structures. In case of endonasal surgery of the sphenoid sinuses, surgeon should be aware of the high possibility the injury of optic nerves and internal carotid artery.

关键词： Sphenoid Pneumatization Neurovascular Structures Association Benin

Incidental Discovery of Sphenoid Sinuses Agenesis: A Report of Two Cases in Benin, West Africa

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Advances in Molecular Imaging 2019年第1期9卷 1-5页

作者： Djivèdé Akanni Charles Agossou Eulalie Sansuamou Fatiou Bouraï ma Patricia Yèkpè Kofi-Mensa Savi de Tovè Olivier Biaou vicentia boco Faculty of Medicine University of Parakou Parakou Benin Department of Radiology University Teaching Hospital of Borgou Department Parakou Benin Faculty of Health Sciences University of Abomey Calavi Cotonou Benin Department of Radiology National and University Teaching Hospital Hubert Koutoukou Maga Cotonou Benin Department of Otorhinolaryngology University Teaching Hospital of Borgou Department Parakou Benin

Sphenoid sinuses are carved into the body of the sphenoid bone. They are probably the most variably pneumatized structures of the skull. They begin their pneumatization at the age of three and finished at adolescence. Several anatomic variants of sphenoid sinuses have been described in the literature. The agenesis of sphenoid sinuses in adults is very rarely found. We report two incidental cases of sphenoid sinuses agenesis discovered on CT scan in Benin, West Africa.

关键词： Sphenoid Agenesis CT-Scan Benin

The Contribution of Ultrasound in Exploring Women Pelvic Pathologies in Two Teaching University Hospitals Maternities in Cotonou

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Open Journal of Radiology 2020年第3期10卷 173-183页

作者： Patricia Yekpe Ahouansou Sbmg Adjadohoun M. Saka G. N’Gamo T. E. Sansuamou Kofi-Mensa Savi De Tove Olivier Biaou vicentia boco National Teaching University Hospital Hubert Koutoukou Maga (CNHU-HKM) Medical Scanning Unit/University of Abomey-Calavi Cotonou Benin Radiology Department Teaching University Hospital-Mother and Child Hospital Cotonou Benin (CHU-MEL) Radiology and Medical Imaging Department Departemental Teaching University Hospital Borgou Parakou Benin

Objective: The aim of this piece of work is to study the contribution of pelvic ultrasound while exploring pelvic pathologies at Hubert Koutoukou Maga Teaching University Hospital “CNHU-HKM” and at the Teaching University Hospital of Mother and Child “CHU-MEL” of Cotonou. Patients and Methods: A descriptive, cross-sectional and analytical study with prospective collec-tion was carried out at the University Clinic of Gynecology and Obstetrics “CUGO” at the CNHU-HKM and in the gynecology department of the CHU-MEL, over a period of 4 months (May to August 2018). We included in this study women over 12 years old who performed a pelvic ultrasound and were followed in the aforementioned health centers. Results: The population of the study consisted of 181 patients. The pelvic ultrasound request frequency was 18.84% compared to all ultrasound examinations. The age group of 25 - 29 years old was the most represented (22.10%). Pelvic pain was the first mo-tive for pelvic ultrasound request (39.8%). The abnormalities found by ultra-sound were uterine and ovarian respectively in 55.4% and 38% of cases. Uter-ine pathology was dominated by uterine myoma (44%). Ovarian cyst (13%) and ovarian dystrophy (14%) were the main ovarian pathologies. There was a statistically significant relationship between certain reasons for consultation, mainly metrorrhagia, dysmenorrhoea, amenorrhoea, leucorrhoea (p Conclusion: The ultrasound remains the first choice examination and is of a great value in exploring pelvic pathologies. In most cases, it helps to find the responsible lesion and to make the appropriate ther-apeutic decisions.

关键词： Ultrasound Pelvis Woman Cotonou

Sonographic Measurement of Optic Nerve Sheath Diameter: A Prognostic Tool for Childhood Cerebral Malaria?

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Open Journal of Radiology 2019年第1期9卷 69-81页

作者： Kofi-Mensa Savi de Tové Yolande Savi de Tové-Sissinto Didier Julien Adedemy Djivèdé Akanni Miralda Kiki Patricia Yèkpè-Ahouansou Olivier Biaou vicentia boco Achille Massougbodji Medical Imaging Department Faculty of Medicine University of Parakou Parakou Republic of Benin Parasitology Department Faculty of Health Sciences University of Abomey Calavi Cotonou Republic of Benin Pediatrics Department Faculty of Medicine University of Parakou Parakou Republic of Benin Medical Imaging Department Faculty of Health Sciences University of AbomeyCalavi Cotonou Republic of Benin

Background: Childhood cerebral malaria is one of the most frequent complications of malaria, with high morbidity and mortality. Raised Intracranial Pressure (ICP) is currently recognized as a fundamental element of the severity of that disease. This study aims to look into the prognostic role of the sonographic measurement of optic nerve sheath diameter (ONSD) in the context of that disease. Methods: This study was conducted in the pediatric and imaging departments of the University Hospital Center of Parakou in Republic of Benin in West Africa. This was a descriptive cross-sectional study with a prospective data collection conducted over a period of 6 months, from March 1st to August 31st, 2014. There were two groups of children with severe malaria and conscious impairment: one with unrousable coma or Cerebral Malaria (Group 1) and the other without unrousable coma (Group 2), benefitting from ONSD sonographic measurement. ONSD was measured 3 mm behind the papilla. Correlation between depth of coma, outcome and ONSD measure on ultrasound was investigated. Results: Group 1 consisted of 37 children and Group 2 of 50 children, i.e. a sample of 87 children. The mean age was 27.21 ± 20.11 months and sex ratio (Male/Female) estimated at 0.89. The average ONSD of the sample was 4.39 ± 0.94 mm with a significant difference (p = 0.0001) between Group 1 (5.09 ± 1.09 mm) and Group 2 (3.87 ± 0.17 mm). Raised ICP prevalence was 48.28% with a significant difference between Group 1 (83.78%) and Group 2 (22%) with p Conclusion: Sonographic measurement of ONSD could be a leading prognostic tool in childhood cerebral malaria management.

关键词： Cerebral Malaria Ultrasound Optic Nerve Sheath Diameter Prognosis Correlation

Clinical and Ultrasound Concordance of Joint Damages in Rheumatoid Arthritis in a Resource-Limited Country

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Open Journal of Radiology 2021年第3期11卷 126-137页

作者： Sonia B. M. G. Adjadohoun Miralda Kiki Maurice M. W. D. Akanni Boris Vidégla Perpétue Batcho Kofi-Mensa S. Savi de Tovè Patricia Yèkpè Ahouansou Zavier C. Zomalheto Olivier Biaou vicentia boco Medical Imaging Department Faculty of Health Sciences University of Abomey Calavi Cotonou Republic of Benin Regional and Teaching Hospital of Borgou/Medical Imaging Department Faculty of Medicine University of Parakou Parakou Republic of Benin Rheumatology Department Faculty of Health Sciences University of Abomey Calavi Cotonou Republic of Benin

Introduction: Rheumatoid arthritis (RA) is the most common chronic inflammatory rheumatism. The increasing use of bone and joint ultrasound as a tool to aid in the detection of unrefined synovitis in developed countries, has led us to study the performance of ultrasound in the diagnosis of RA in subjects consulting in rheumatology at Cotonou. Study Method: Descriptive cross-sectional study of patients with RA, selected on the basis of ACR/ EULAR 2010 criteria. A complete clinical examination with imaging including X-rays and ultrasounds of the hands and feet were performed in all patients who have given their consent. The data collected was analyzed using EPI data 3.1 and SPSS 24.0 software. The significance rate was defined with a p-value Results: All 53 patients included had lesions on ultrasound. Synovitis was found in 98.1% and bone erosions in 88.7%. There was no agreement in the wrists between clinical examination and ultrasound (k = -0.116), MCP (k = -0.097) and MTP (k = -0.031). Agreement was very low at the PPI level (k = 0.03). It was low at the different sites, between ultrasound and radiographic detection of lesions (k between 0.022 - 0.22). Age, positive immunologic RA factor and biological inflammatory syndrome were associated with ultrasound erosions (p = 0.0001) and only age was associated with active synovitis (p = 0.022). Conclusion: Bone and articular ultrasound is a good complementary alternative to clinical examination and radiography diagnostic in early diagnosis of RA in our developing countries, in the absence of MRI which remains a luxury.

关键词： Rheumatoid Arthritis Ultrasound Erosions Synovitis Cotonou

Contribution of Imaging to the Diagnosis of Non-Traumatic Tendinopathies of the Thoracic Limb in a Resource-Constrained Country

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Open Journal of Radiology 2021年第4期11卷 204-217页

作者： Sonia B. M. G. Adjadohoun Sessi M. H. G. Kiki Maurice M. W. D. Akanni Houlda Tossa Boris Vidégla Dossou-Yovo Hilaire Kofi-Mensa S. Savi de Tovè Patricia Yèkpè̀ Ahouansou Zavier C. Zomalheto Olivier Biaou vicentia boco Department of Medical Imaging Faculty of Health Sciences University of Abomey-Calavi Cotonou Benin Department of Regional and Teaching Hospital of Borgou/Medical Imaging Faculty of Medicine University of Parakou Parakou Benin Department of Rheumatology Faculty of Health Sciences University of Abomey-Calavi Cotonou Benin

Introduction: Tendinopathy of the thoracic limb (TMT) is frequent, and is responsible for an important socio-professional handicap. Medical imaging, in particular, ultrasound has a major role in contributing to the diagnosis. As the use of ultrasound is recent in osteoarticular pathology, especially in Africa, we proposed to determine the contribution of imaging in the diagnosis of tendinopathy of the thoracic limbs in a country with limited resources. Patients and Method: A descriptive and analytical cross-sectional study of patients with tendinopathy of the thoracic limb who consulted the rheumatology department of the CNHU-HKM of Cotonou from August 6, 2019 to October 6, 2019. We evaluated the concordance of thoracic limb tendinopathy between imaging (radiography and ultrasound) and the clinic on the one hand and then between radiography and ultrasound on the other hand. The analysis of the collected data was carried out with the Epi-info software version 7.***.1.0. Then the concordance was evaluated by the kappa coefficient. Results: Fifty- two (52) patients with 104 joints were evaluated. The average age was 54.92 ± 3.40 years. Clinically, rotator cuff tendinopathy was the most frequent abarticular pathology (45.19%). The clinical-ultrasound agreement was strong (k = 0.7527) for the shoulders, very strong (k = 0.9360) for the elbows and moderate for the wrists (k = 0.6695). The clinical-radiographic agreement was weak (k = 0.2316) at the shoulder level and very weak (k = 0.2087) at the elbow level. The radio-ultrasound agreement was very low in the shoulders (k = 0.1522), elbows (k = 0.1859) and wrists (k = 0.0001). Conclusion: The contribution of imaging in the diagnosis of TMT remains certain even in a country with limited resources like ours. Ultrasound is a reliable examination for the diagnosis of non-traumatic tendinopathy of the thoracic limb with a good clinical-ultra- sound concordance a

关键词： Tendinopathy Thoracic Limb Radio-Clinical Concordance Clinical-Ultrasound Concordance Benin