Publications by authors named "Yaw Mensah"

Background: Breast, cervical, and ovarian cancers are among the top ten global cancers, affecting women, with age-standardized rates per 100,000 being 47.8 for breast, 13.3 for cervical, and 6.

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Purpose: The objective of our IAEA-coordinated international study was to assess CT practices and radiation doses from multiple hospitals across several African countries.

Methods: The study included 13 hospitals from Africa which contributed information on minimum of 20 consecutive patients who underwent head, chest, and/or abdomen-pelvis CT. Prior to the data recording step, all hospitals had a mandatory one-hour training on the best practices in recording the relevant data elements.

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Objective: The study sought to determine clinical characteristics and histologic subtypes of a cohort of lung cancer patients in a tertiary facility.

Design: Retrospective review of the medical records of histology-confirmed lung cancer cases at the respiratory clinic over a 3-year period.

Setting: Respiratory Clinic, Korle-Bu Teaching Hospital, Accra, Ghana.

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Article Synopsis
  • Mucocoele of the appendix is a rare condition (0.2-0.7% prevalence) characterized by mucus buildup in the appendix, often presenting with no clear symptoms.
  • The text describes three cases involving different patients, highlighting the variability of symptoms and findings, ranging from acute appendicitis to incidental detection of a mucocoele.
  • Preoperative detection is challenging, often requiring surgery for diagnosis, where benign types have a good prognosis while malignant cases present a poorer outlook.
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Background: Hypertension is preeminent among the vascular risk factors for stroke occurrence. The wide gaps in awareness, detection, treatment, and control rates of hypertension are fueling an epidemic of stroke in sub-Saharan Africa.

Purpose: To quantify the contribution of untreated, treated but uncontrolled, and controlled hypertension to stroke occurrence in Ghana and Nigeria.

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Article Synopsis
  • African ancestry populations have the highest stroke burden globally, yet the genetic factors contributing to stroke in these groups are not well understood, prompting the SIREN study in West Africa to investigate this.
  • The study involved recruiting stroke patients and stroke-free controls to conduct a genome-wide association study (GWAS), leading to DNA analysis that identified significant SNPs near specific genes associated with stroke risk.
  • Key findings highlighted protective genetic variants near AADACL2 and MIR5186 on chromosome 3, as well as other notable associations on chromosomes 5, 6, 12, 16, and 18, which could provide insights for future stroke risk assessment in these populations.
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Background: The dietary factors associated with the high burden of hypertension among indigenous Africans remain poorly understood. We assessed the relationship between dietary patterns and hypertension among indigenous Africans.

Method: In this study, 1550 participants with hypertension matched (for age: ± 5 years, sex and ethnicity) with 1550 participants without hypertension were identified from the stroke-free population in the Stroke Investigative Research and Educational Network study in Ghana and Nigeria.

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Introduction: Non-cigarette tobacco (NCT) represents a form of tobacco use with a misperceived significance in chronic disease events. Whether NCT use is sufficient to promote stroke events, especially among Africans, is yet to be understood. This study assessed the relationship between NCT use and stroke among indigenous Africans.

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Background: This study aimed to develop a risk-scoring model for hypertension among Africans.

Methods: In this study, 4413 stroke-free controls were used to develop the risk-scoring model for hypertension. Logistic regression models were applied to 13 risk factors.

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Objectives: To review the Computed Tomography( CT )features of pediatric oncological patients with abdominal and pelvic tumours and correlate these findings with their histopathological diagnosis.

Design: This was a retrospective cross-sectional facility-based study.

Setting: This study was conducted in the Pediatric Oncology Unit and Radiology Department of the Korle Bu Teaching Hospital.

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Background Baseline stroke severity is probably partly responsible for poor stroke outcomes in sub-Saharan Africa. However, there is a paucity of information on determinants of stroke severity among indigenous Africans. We sought to identify the factors associated with stroke severity among West Africans in the SIREN (Stroke Investigative Research and Educational Networks) study.

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Background: Every minute, six indigenous Africans develop new strokes. Patient-level and system-level contributors to early stroke fatality in this region are yet to be delineated. We aimed to identify and quantify the contributions of patient-level and system-level determinants of inpatient stroke fatality across 16 hospitals in Ghana and Nigeria.

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Pericardial cysts are rare mediastinal masses commonly asymptomatic and incidentally found on chest radiographs. Pericardial cysts may be acquired/inflammatory in origin and may be symptomatic. We present a case of 65-year-old male who presented with symptoms of right heart failure.

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Objective: This study explored perceptions, preferences and attitudes towards disclosure of genetic testing results for stroke among stroke-free controls (and their family members) in the SIREN-SIBS Genomics Study, healthcare providers and policymakers.

Materials And Methods: We conducted a qualitative thematic analysis of key informant interviews with 61 participants recruited from community advisory boards (30) and health care providers (31) across seven sites in Nigeria and Ghana.

Results: Major findings illustrate differences in the knowledge of genetic testing with superior knowledge among health care professionals.

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Background: Stroke is a leading cause of disability and mortality worldwide, but little is known about the contribution of secondhand smoke exposure (SHSE) to stroke epidemiology among indigenous Africans.

Objective: To evaluate the association of SHSE with stroke among indigenous Africans.

Methods: We analyzed the relationship of SHSE with stroke among 2990 case-control pairs of adults who had never smoked (identified in the SIREN study) using conditional logistic regression at a two-sided P < 0.

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Background: We evaluated the characteristics of carotid and vertebral atherosclerosis in indigenous West Africans with stroke.

Methodology: Of the 3778stroke patients recruited between 01/2014 and 08/2017, 1070 (28.3%) received carotid and vertebral artery evaluation with B-mode Ultrasound.

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Unlabelled: A tailgut cyst is a rare congenital lesion that develops from a residual posterior remnant of the intestine and presents as a mass in the presacral space. They are generally asymptomatic or have atypical symptoms, are usually benign but may rarely become malignant. We report a case of a 37-year-old female who initially presented to the Surgical Department of Korle Bu Teaching Hospital, Accra, Ghana with a malignant tailgut cyst after having repeated surgical procedures for recurrent perianal infective pathologies but still had persistence of symptoms.

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Objective: Now is the time to reflect on the situation of neuro-endovascular interventions (NEVT) in Africa, particularly Ghana, and to renew our commitment to provide high-quality health care to our people. This evaluation is significant because it seeks to assess progress toward our goals and identify potential obstacles for remedial action and to highlight the challenges of NEVT in Ghana.

Methods: Retrospective review of all endovascular treatments performed between January 1, 2019, and December 31, 2021, at two Ghanaian hospitals.

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Background: There is a need to harmonize imaging practices in computed tomography (CT) imaging. This study, therefore, investigated the variability of the basic imaging protocols used for CT imaging of common indications in Ghana in order to generate recommendations for the development of national imaging practice guidelines in CT imaging.

Method: A cross-sectional study, utilizing a structured online questionnaire, was undertaken (between December 2018 to March 2019) to collect indication-based imaging protocol data (scan coverage, scan series, image quality requirement, slice thickness, reconstruction, scan mode and orientation, required window, AEC usage, scan and breath hold techniques etc.

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Background And Purpose: To identify the qualitative and quantitative contributions of conventional risk factors for occurrence of ischemic stroke and its key pathophysiologic subtypes among West Africans.

Methods: The SIREN (Stroke Investigative Research and Educational Network) is a multicenter, case-control study involving 15 sites in Ghana and Nigeria. Cases include adults aged ≥18 years with ischemic stroke who were etiologically subtyped using the A-S-C-O-D classification into atherosclerosis, small-vessel occlusion, cardiac pathology, other causes, and dissection.

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Hydrocalyx is an obstructed renal calyx from infundibulo-pelvic diminution or stenosis which leads to dilatation of the calyx. It becomes clinically important when associated with flank pains, haematuria, infection, renal impairment or stone formation. On intravenous urography the finding of a cystic dilatation of a calyx that communicates with the renal pelvis supports the diagnosis.

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Background: Post-stroke seizures (PSS) are associated with significant morbidity and mortality across the globe. There is a paucity of data on PSS in Africa.

Purpose: To assess the frequency and factors associated with PSS by stroke types across 15 hospitals in Nigeria and Ghana.

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This is a case report of a 55-year-old man with Type 2 Diabetes Mellitus who presented with progressive breathlessness, chest pain and hyperglycaemia. An initial impression of a chest infection was made. Management was initiated with antibiotics, but this was unsuccessful, and he continued to desaturate.

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Computed Tomography (CT) scan of the chest plays an important role in the diagnosis and management of Coronavirus disease 2019 (COVID-19), the disease caused by the novel coronavirus SARS-CoV-2. COVID-19 pneumonia shows typical CT Scan features which can aid diagnoses and therefore help in the early detection and isolation of infected patients. CT scanners are readily available in many parts of Ghana.

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