1
|
Aldin Z, Diss JK, Mahmood H, Sadik T, Basra H, Ahmed M, Danawi Z, Gul A, Sayed-Noor AS. Long-term effectiveness of transforaminal anterolateral approach CT-guided cervical epidural steroid injections for cervical radiculopathy treatment. Clin Radiol 2024; 79:e775-e783. [PMID: 38369438 DOI: 10.1016/j.crad.2024.01.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 11/18/2023] [Accepted: 01/17/2024] [Indexed: 02/20/2024]
Abstract
AIM To evaluate the long-term clinical effectiveness of computed tomography (CT)-guided transforaminal cervical epidural steroid injection using an anterolateral approach for the treatment of cervical radiculopathy (CR) using well-established robust clinical scoring systems for neck pain and neck disability. Despite its widespread use, evidence to support the long-term benefit of routine cervical epidural steroid injection is currently very limited. MATERIALS AND METHODS This study included 113 patients with magnetic resonance imaging (MRI)-confirmed CR who underwent a steroid injection at a single cervical level via a unilateral transforaminal anterolateral approach. Pain was assessed quantitatively at pre-injection, 15 minutes post-injection, 1 month, 3 months, and at 1 year. Neck disability was assessed using the Oswestry Neck Disability Index (NDI) at pre-injection, 1 month, 3 months, and 1 year time points. RESULTS Eighty patients completed the study. Sixty per cent reported reduced neck pain (mean pain reduction, 55%), which was clinically significant in 45% cases. Furthermore, 66% reported an improvement in neck disability (mean improvement, 51%), which was clinically significant for 56% patients. Clinically significant good outcomes in both neck pain and neck disability were evident from as early as 1-month, and importantly, were independent both of pre-treatment CR characteristics (including severity of pre-injection neck pain or disability) and of findings on pre-injection MRI imaging. CONCLUSION Transforaminal anterolateral approach CT-guided epidural steroid injection resulted in a clinically significant long-term improvement in both neck pain and disability for half of the present cohort of patients with unilateral single-level CR. This improvement was independent of the severity of the initial symptoms and pre-injection MRI findings.
Collapse
Affiliation(s)
- Z Aldin
- Radiology Department, Princess Alexandra NHS Trust, Hamstel Road, Harlow, Essex, UK
| | - J K Diss
- Radiology Department, Princess Alexandra NHS Trust, Hamstel Road, Harlow, Essex, UK.
| | - H Mahmood
- Imaging Department, Chelsea and Westminster Hospital NHS Foundation Trust, Chelsea and Westminster Hospital, Chelsea, London, UK
| | - T Sadik
- Orthopaedic/Spinal Surgery Department, Princess Alexandra NHS Trust, Hamstel Road, Harlow, Essex, UK
| | - H Basra
- Radiology Department, Princess Alexandra NHS Trust, Hamstel Road, Harlow, Essex, UK
| | - M Ahmed
- Orthopaedic/Spinal Surgery Department, Princess Alexandra NHS Trust, Hamstel Road, Harlow, Essex, UK
| | - Z Danawi
- Department of Trauma and Orthopaedics, Southend University Hospital, Southend, Essex, UK
| | - A Gul
- Orthopaedic/Spinal Surgery Department, Princess Alexandra NHS Trust, Hamstel Road, Harlow, Essex, UK
| | - A S Sayed-Noor
- Department of Surgical and Perioperative Sciences (Orthopedics), Sundsvall and Norrland University Hospitals, Umeå University, Stockholm, Sweden; Clinical Sciences Department, College of Medicine, University of Sharjah, United Arab Emirates
| |
Collapse
|
2
|
Hankinson P, Mahmood H, Walsh H, Speight PM, Khurram SA. Demystifying oral epithelial dysplasia: a histological guide. Pathology 2024; 56:11-23. [PMID: 38030478 DOI: 10.1016/j.pathol.2023.10.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 09/25/2023] [Accepted: 10/05/2023] [Indexed: 12/01/2023]
Abstract
Oral epithelial dysplasia is a histologically diagnosed potentially premalignant disorder of the oral mucosa, which carries a risk of malignant transformation to squamous cell carcinoma. The diagnosis and grading of oral epithelial dysplasia is challenging, with cases often referred to specialist oral and maxillofacial pathology centres for second opinion. Even still there is poor inter-examiner and intra-examiner agreement in a diagnosis. There are a total of 28 features of oral epithelial dysplasia listed in the 5th edition of World Health Organization classification of tumours of the head and neck. Each of these features is poorly defined and subjective in its interpretation. Moreover, how these features contribute to dysplasia grading and risk stratification is even less well defined. This article discusses each of the features of oral epithelial dysplasia with examples and provides an overview of the common mimics, including the normal histological features of the oral mucosa which may mimic atypia. This article also highlights the paucity of evidence defining these features while offering suggested definitions. Ideally, these definitions will be refined, and the most important features identified to simplify the diagnosis of oral epithelial dysplasia. Digital whole slide images of the figures in this paper can be found at: https://www.pathogenesis.co.uk/r/demystifying-dysplasia-histology-dataset.
Collapse
Affiliation(s)
- Paul Hankinson
- Unit of Oral and Maxillofacial Pathology, School of Clinical Dentistry, University of Sheffield, England, UK
| | - Hanya Mahmood
- Academic Unit of Oral and Maxillofacial Surgery, School of Clinical Dentistry, University of Sheffield, England, UK
| | - Hannah Walsh
- Unit of Oral and Maxillofacial Pathology, School of Clinical Dentistry, University of Sheffield, England, UK
| | - Paul M Speight
- Unit of Oral and Maxillofacial Pathology, School of Clinical Dentistry, University of Sheffield, England, UK
| | - Syed Ali Khurram
- Unit of Oral and Maxillofacial Pathology, School of Clinical Dentistry, University of Sheffield, England, UK.
| |
Collapse
|
3
|
Sathyamoorthy H, Mahmood H, Zubir AZA, Hankinson P, Khurram SA. Prognostic importance of mitosis quantification and PHH3 expression in oral epithelial dysplasia. Virchows Arch 2024; 484:47-59. [PMID: 37882821 PMCID: PMC10791886 DOI: 10.1007/s00428-023-03668-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 09/28/2023] [Accepted: 09/29/2023] [Indexed: 10/27/2023]
Abstract
Oral epithelial dysplasia (OED) is diagnosed and graded using a range of histological features, making grading subjective and challenging. Mitotic counting and phosphohistone-H3 (PHH3) staining have been used for the prognostication of various malignancies; however, their importance in OED remains unexplored. This study conducts a quantitative analysis of mitotic activity in OED using both haematoxylin and eosin (H&E)-stained slides and immunohistochemical (IHC) staining for PHH3. Specifically, the diagnostic and prognostic importance of mitotic number, mitotic type and intra-epithelial location is evaluated. Whole slide images (WSI) of OED (n = 60) and non-dysplastic tissue (n = 8) were prepared for analysis. Five-year follow-up data was collected. The total number of mitosis (TNOM), mitosis type and intra-epithelial location was manually evaluated on H&E images and a digital mitotic count performed on PHH3-stained WSI. Statistical associations between these features and OED grade, malignant transformation and OED recurrence were determined. Mitosis count increased with grade severity (H&E: p < 0.005; IHC: p < 0.05), and grade-based differences were seen for mitosis type and location (p < 0.05). The ratio of normal-to-abnormal mitoses was higher in OED (1.61) than control (1.25) and reduced with grade severity. TNOM, type and location were better predictors when combined with histological grading, with the most prognostic models demonstrating an AUROC of 0.81 for transformation and 0.78 for recurrence, exceeding conventional grading. Mitosis quantification and PHH3 staining can be an adjunct to conventional H&E assessment and grading for the prediction of OED prognosis. Validation on larger multicentre cohorts is needed to establish these findings.
Collapse
Affiliation(s)
- Hrishikesh Sathyamoorthy
- Unit of Oral and Maxillofacial Pathology, School of Clinical Dentistry, University of Sheffield, 19 Claremont Crescent, Sheffield, S10 2TA, UK
| | - Hanya Mahmood
- Academic Unit of Oral & Maxillofacial Surgery, School of Clinical Dentistry, University of Sheffield, 19 Claremont Crescent, Sheffield, S10 2TA, UK
| | - Amir Zaki Abdullah Zubir
- Unit of Oral and Maxillofacial Pathology, School of Clinical Dentistry, University of Sheffield, 19 Claremont Crescent, Sheffield, S10 2TA, UK
| | - Paul Hankinson
- Unit of Oral and Maxillofacial Pathology, School of Clinical Dentistry, University of Sheffield, 19 Claremont Crescent, Sheffield, S10 2TA, UK
| | - Syed Ali Khurram
- Unit of Oral and Maxillofacial Pathology, School of Clinical Dentistry, University of Sheffield, 19 Claremont Crescent, Sheffield, S10 2TA, UK.
| |
Collapse
|
4
|
Mahmood H, Shephard A, Hankinson P, Bradburn M, Araujo ALD, Santos-Silva AR, Lopes MA, Vargas PA, McCombe KD, Craig SG, James J, Brooks J, Nankivell P, Mehanna H, Rajpoot N, Khurram SA. Development and validation of a multivariable model for prediction of malignant transformation and recurrence of oral epithelial dysplasia. Br J Cancer 2023; 129:1599-1607. [PMID: 37758836 PMCID: PMC10645879 DOI: 10.1038/s41416-023-02438-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Revised: 09/02/2023] [Accepted: 09/12/2023] [Indexed: 09/29/2023] Open
Abstract
BACKGROUND Oral epithelial dysplasia (OED) is the precursor to oral squamous cell carcinoma which is amongst the top ten cancers worldwide. Prognostic significance of conventional histological features in OED is not well established. Many additional histological abnormalities are seen in OED, but are insufficiently investigated, and have not been correlated to clinical outcomes. METHODS A digital quantitative analysis of epithelial cellularity, nuclear geometry, cytoplasm staining intensity and epithelial architecture/thickness is conducted on 75 OED whole-slide images (252 regions of interest) with feature-specific comparisons between grades and against non-dysplastic/control cases. Multivariable models were developed to evaluate prediction of OED recurrence and malignant transformation. The best performing models were externally validated on unseen cases pooled from four different centres (n = 121), of which 32% progressed to cancer, with an average transformation time of 45 months. RESULTS Grade-based differences were seen for cytoplasmic eosin, nuclear eccentricity, and circularity in basal epithelial cells of OED (p < 0.05). Nucleus circularity was associated with OED recurrence (p = 0.018) and epithelial perimeter associated with malignant transformation (p = 0.03). The developed model demonstrated superior predictive potential for malignant transformation (AUROC 0.77) and OED recurrence (AUROC 0.74) as compared with conventional WHO grading (AUROC 0.68 and 0.71, respectively). External validation supported the prognostic strength of this model. CONCLUSIONS This study supports a novel prognostic model which outperforms existing grading systems. Further studies are warranted to evaluate its significance for OED prognostication.
Collapse
Affiliation(s)
- Hanya Mahmood
- Academic Unit of Oral & Maxillofacial Surgery, School of Clinical Dentistry, University of Sheffield, Sheffield, UK.
| | - Adam Shephard
- Tissue Image Analytics Centre, Department of Computer Science, University of Warwick, Warwick, UK
| | - Paul Hankinson
- Unit of Oral & Maxillofacial Pathology, School of Clinical Dentistry, University of Sheffield, Sheffield, UK
| | - Mike Bradburn
- Clinical Trials Research Unit, School of Health and Related Research, University of Sheffield, Sheffield, UK
| | - Anna Luiza Damaceno Araujo
- Oral Diagnosis Department, Piracicaba Dental School, University of Campinas (UNICAMP), São Paulo, Brazil
| | - Alan Roger Santos-Silva
- Oral Diagnosis Department, Piracicaba Dental School, University of Campinas (UNICAMP), São Paulo, Brazil
| | - Marcio Ajudarte Lopes
- Oral Diagnosis Department, Piracicaba Dental School, University of Campinas (UNICAMP), São Paulo, Brazil
| | - Pablo Agustin Vargas
- Oral Diagnosis Department, Piracicaba Dental School, University of Campinas (UNICAMP), São Paulo, Brazil
| | - Kris D McCombe
- Precision Medicine Centre, Patrick G. Johnston Centre for Cancer Research, Queen's University Belfast, Belfast, UK
| | - Stephanie G Craig
- Precision Medicine Centre, Patrick G. Johnston Centre for Cancer Research, Queen's University Belfast, Belfast, UK
| | - Jacqueline James
- Precision Medicine Centre, Patrick G. Johnston Centre for Cancer Research, Queen's University Belfast, Belfast, UK
| | - Jill Brooks
- Institute of Head and Neck Studies and Education, Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, UK
| | - Paul Nankivell
- Institute of Head and Neck Studies and Education, Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, UK
| | - Hisham Mehanna
- Institute of Head and Neck Studies and Education, Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, UK
| | - Nasir Rajpoot
- Tissue Image Analytics Centre, Department of Computer Science, University of Warwick, Warwick, UK
| | - Syed Ali Khurram
- Unit of Oral & Maxillofacial Pathology, School of Clinical Dentistry, University of Sheffield, Sheffield, UK
| |
Collapse
|
5
|
Reddy SM, Mahmood H. Development of a multiagency protocol to support people with No Recourse to Public Funds in Wolverhampton (UK). Perspect Public Health 2023; 143:272-274. [PMID: 35766318 DOI: 10.1177/17579139221106574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND No Recourse to Public Funds (NRPF) status is applied to individuals and families that are subject to immigration control, resulting in them having restricted access to state-funded benefits within England. NRPF is a public health risk as it increases the risk of destitution among vulnerable migrants. AIMS The aim of this study was to engage with public and voluntary sector staff within Wolverhampton working with people with a NRPF status to develop and create an easily accessible guide ('protocol') to help facilitate identification of appropriate cross-sector interventions and support. METHODS Data were collected via an online survey as well as face-to-face semi-structured interviews with local NRPF stakeholders. RESULTS Four themes emerged from the thematic analysis of participant responses: understanding NRPF statuses, varying support requirements, poor communication and awareness of vulnerabilities. Currently, in England, there does not appear to be a standardised localised protocol which can be used to reduce the complexities and confusion encountered by public and voluntary sectors who support people with NRPF status. CONCLUSION The findings from this study have allowed the Wolverhampton NRPF to create an online information resource that includes training events to raise the awareness of NRPF, as well as the development of a localised multiagency protocol that has better equipped it to support and safeguard people with NRPF.
Collapse
Affiliation(s)
- S M Reddy
- Public Health, City of Wolverhampton Council, Wolverhampton WV1 1SH, UK
| | - H Mahmood
- Population Health, NHS Confederation, London, UK
| |
Collapse
|
6
|
Bashir RMS, Shephard AJ, Mahmood H, Azarmehr N, Raza SEA, Khurram SA, Rajpoot NM. A digital score of peri-epithelial lymphocytic activity predicts malignant transformation in oral epithelial dysplasia. J Pathol 2023; 260:431-442. [PMID: 37294162 PMCID: PMC10952946 DOI: 10.1002/path.6094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 04/15/2023] [Accepted: 05/02/2023] [Indexed: 06/10/2023]
Abstract
Oral squamous cell carcinoma (OSCC) is amongst the most common cancers, with more than 377,000 new cases worldwide each year. OSCC prognosis remains poor, related to cancer presentation at a late stage, indicating the need for early detection to improve patient prognosis. OSCC is often preceded by a premalignant state known as oral epithelial dysplasia (OED), which is diagnosed and graded using subjective histological criteria leading to variability and prognostic unreliability. In this work, we propose a deep learning approach for the development of prognostic models for malignant transformation and their association with clinical outcomes in histology whole slide images (WSIs) of OED tissue sections. We train a weakly supervised method on OED cases (n = 137) with malignant transformation (n = 50) and mean malignant transformation time of 6.51 years (±5.35 SD). Stratified five-fold cross-validation achieved an average area under the receiver-operator characteristic curve (AUROC) of 0.78 for predicting malignant transformation in OED. Hotspot analysis revealed various features of nuclei in the epithelium and peri-epithelial tissue to be significant prognostic factors for malignant transformation, including the count of peri-epithelial lymphocytes (PELs) (p < 0.05), epithelial layer nuclei count (NC) (p < 0.05), and basal layer NC (p < 0.05). Progression-free survival (PFS) using the epithelial layer NC (p < 0.05, C-index = 0.73), basal layer NC (p < 0.05, C-index = 0.70), and PELs count (p < 0.05, C-index = 0.73) all showed association of these features with a high risk of malignant transformation in our univariate analysis. Our work shows the application of deep learning for the prognostication and prediction of PFS of OED for the first time and offers potential to aid patient management. Further evaluation and testing on multi-centre data is required for validation and translation to clinical practice. © 2023 The Authors. The Journal of Pathology published by John Wiley & Sons Ltd on behalf of The Pathological Society of Great Britain and Ireland.
Collapse
Affiliation(s)
| | - Adam J Shephard
- Tissue Image Analytics Centre, Department of Computer ScienceUniversity of WarwickCoventryUK
| | - Hanya Mahmood
- Academic Unit of Oral & Maxillofacial Surgery, School of Clinical DentistryUniversity of SheffieldSheffieldUK
- Unit of Oral & Maxillofacial Pathology, School of Clinical DentistryUniversity of SheffieldSheffieldUK
| | - Neda Azarmehr
- Unit of Oral & Maxillofacial Pathology, School of Clinical DentistryUniversity of SheffieldSheffieldUK
| | - Shan E Ahmed Raza
- Tissue Image Analytics Centre, Department of Computer ScienceUniversity of WarwickCoventryUK
| | - Syed Ali Khurram
- Academic Unit of Oral & Maxillofacial Surgery, School of Clinical DentistryUniversity of SheffieldSheffieldUK
- Unit of Oral & Maxillofacial Pathology, School of Clinical DentistryUniversity of SheffieldSheffieldUK
| | - Nasir M Rajpoot
- Tissue Image Analytics Centre, Department of Computer ScienceUniversity of WarwickCoventryUK
| |
Collapse
|
7
|
Mahmood H, Bradburn M, Rajpoot N, Islam NM, Kujan O, Khurram SA. Prediction of malignant transformation and recurrence of oral epithelial dysplasia using architectural and cytological feature specific prognostic models. Mod Pathol 2022; 35:1151-1159. [PMID: 35361889 PMCID: PMC9424112 DOI: 10.1038/s41379-022-01067-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Revised: 03/02/2022] [Accepted: 03/03/2022] [Indexed: 12/24/2022]
Abstract
Oral epithelial dysplasia (OED) is a precursor state usually preceding oral squamous cell carcinoma (OSCC). Histological grading is the current gold standard for OED prognostication but is subjective and variable with unreliable outcome prediction. We explore if individual OED histological features can be used to develop and evaluate prognostic models for malignant transformation and recurrence prediction. Digitised tissue slides for a cohort of 109 OED cases were reviewed by three expert pathologists, where the prevalence and agreement of architectural and cytological histological features was assessed and association with clinical outcomes analysed using Cox proportional hazards regression and Kaplan-Meier curves. Within the cohort, the most prevalent features were basal cell hyperplasia (72%) and irregular surface keratin (60%), and least common were verrucous surface (26%), loss of epithelial cohesion (30%), lymphocytic band and dyskeratosis (34%). Several features were significant for transformation (p < 0.036) and recurrence (p < 0.015) including bulbous rete pegs, hyperchromatism, loss of epithelial cohesion, loss of stratification, suprabasal mitoses and nuclear pleomorphism. This led us to propose two prognostic scoring systems including a '6-point model' using the six features showing a greater statistical association with transformation and recurrence (bulbous rete pegs, hyperchromatism, loss of epithelial cohesion, loss of stratification, suprabasal mitoses, nuclear pleomorphism) and a 'two-point model' using the two features with highest inter-pathologist agreement (loss of epithelial cohesion and bulbous rete pegs). Both the 'six point' and 'two point' models showed good predictive ability (AUROC ≥ 0.774 for transformation and 0.726 for recurrence) with further improvement when age, gender and histological grade were added. These results demonstrate a correlation between individual OED histological features and prognosis for the first time. The proposed models have the potential to simplify OED grading and aid patient management. Validation on larger multicentre cohorts with prospective analysis is needed to establish their usefulness in clinical practice.
Collapse
Affiliation(s)
- Hanya Mahmood
- Academic Unit of Oral & Maxillofacial Surgery, School of Clinical Dentistry, University of Sheffield, 19 Claremont Crescent, Sheffield, S10 2TA, UK
| | - Mike Bradburn
- Clinical Trials Research Unit, School of Health and Related Research, University of Sheffield, Sheffield, UK
| | - Nasir Rajpoot
- Tissue Image Analytics Centre, Department of Computer Science, University of Warwick, Coventry, UK
| | - Nadim Mohammed Islam
- Department of Oral & Maxillofacial Diagnostic Sciences, College of Dentistry, University of Florida, Gainesville, FL, USA
| | - Omar Kujan
- Oral Diagnostic and Surgical Sciences Division, UWA Dental School, The University of Western Australia, Perth, WA, Australia
| | - Syed Ali Khurram
- Unit of Oral & Maxillofacial Pathology, School of Clinical Dentistry, University of Sheffield, Sheffield, UK.
| |
Collapse
|
8
|
Mahmood H, Habib M, Aslam W, Khursheed S, Fatima S, Aziz S, Habib M, Faheem M. Clinicopathological spectrum of Diffuse Large B Cell lymphoma: a study targeting population yet unexplored in Pakistan. BMC Res Notes 2021; 14:354. [PMID: 34507605 PMCID: PMC8434720 DOI: 10.1186/s13104-021-05768-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 08/31/2021] [Indexed: 12/16/2022] Open
Abstract
Objective Diffuse Large B Cell Lymphoma (DLBCL) is the most common type of Non-Hodgkin Lymphoma (NHL). The aim of this study was to assess the clinico pathological characteristics of DLBCL specifically, among the affected individuals residing in Northern areas of Pakistan who had not been previously included in major lymphoma studies due to their remote location. Results Mean age of the patients was 49.7 years. Male: female ratio was 1.5:1. Primary site was lymph node in 99 (71.74%) patients, out of which, 36 (26.09%) patients had B symptoms and 19 (13.77%) patients had stage IV disease. 39 (28.26%) patients had primary extra nodal involvement, 4 (2.90%) patients had B symptoms and 3 (2.17%) had stage IV disease. Extra nodal sites involved in primary extra nodal DLBCL were gastrointestinal tract (GIT) 19 (48.72%), tonsils 6 (15.38%), spine 4 (10.26%), soft tissue swelling 3 (7.69%), parotid gland 2 (5.13%), thyroid 2 (5.13%) central nervous system (CNS) 1 (2.56), breast 1 (2.56%) and bone marrow 1 (2.56%). Our study revealed increased percentage of patients with nodal DLBCL in stage IV and with B symptoms. Few patients with primary extra nodal DLBCL had B symptoms and stage IV disease at presentation. GIT was the most common site of involvement in primary extra nodal DLBCL. Supplementary Information The online version contains supplementary material available at 10.1186/s13104-021-05768-5.
Collapse
Affiliation(s)
- H Mahmood
- Clinical Oncology, Nuclear Medicine Oncology & Radiotherapy Institute, Islamabad, Pakistan
| | - M Habib
- Hematology (Pathology), Shifa College of Medicine (Shifa Tameer-e-Millat University), Islamabad, Pakistan.
| | - W Aslam
- Hematology (Pathology), Nuclear Medicine Oncology & Radiotherapy Institute, Islamabad, Pakistan
| | - S Khursheed
- Histopathology (Pathology), Nuclear Medicine Oncology & Radiotherapy Institute, Islamabad, Pakistan
| | - S Fatima
- Nuclear Medicine, Nuclear Medicine Oncology & Radiotherapy Institute, Islamabad, Pakistan
| | - S Aziz
- Pathology, Nuclear Medicine Oncology & Radiotherapy Institute, Islamabad, Pakistan
| | - M Habib
- Restorative Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - M Faheem
- Clinical Oncology, Nuclear Medicine Oncology & Radiotherapy Institute, Islamabad, Pakistan
| |
Collapse
|
9
|
Mahmood H, Shaban M, Rajpoot N, Khurram SA. Artificial Intelligence-based methods in head and neck cancer diagnosis: an overview. Br J Cancer 2021; 124:1934-1940. [PMID: 33875821 PMCID: PMC8184820 DOI: 10.1038/s41416-021-01386-x] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 03/11/2021] [Accepted: 03/31/2021] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND This paper reviews recent literature employing Artificial Intelligence/Machine Learning (AI/ML) methods for diagnostic evaluation of head and neck cancers (HNC) using automated image analysis. METHODS Electronic database searches using MEDLINE via OVID, EMBASE and Google Scholar were conducted to retrieve articles using AI/ML for diagnostic evaluation of HNC (2009-2020). No restrictions were placed on the AI/ML method or imaging modality used. RESULTS In total, 32 articles were identified. HNC sites included oral cavity (n = 16), nasopharynx (n = 3), oropharynx (n = 3), larynx (n = 2), salivary glands (n = 2), sinonasal (n = 1) and in five studies multiple sites were studied. Imaging modalities included histological (n = 9), radiological (n = 8), hyperspectral (n = 6), endoscopic/clinical (n = 5), infrared thermal (n = 1) and optical (n = 1). Clinicopathologic/genomic data were used in two studies. Traditional ML methods were employed in 22 studies (69%), deep learning (DL) in eight studies (25%) and a combination of these methods in two studies (6%). CONCLUSIONS There is an increasing volume of studies exploring the role of AI/ML to aid HNC detection using a range of imaging modalities. These methods can achieve high degrees of accuracy that can exceed the abilities of human judgement in making data predictions. Large-scale multi-centric prospective studies are required to aid deployment into clinical practice.
Collapse
Affiliation(s)
- Hanya Mahmood
- Academic Unit of Oral & Maxillofacial Surgery, School of Clinical Dentistry, University of Sheffield, Sheffield, UK.
| | - Muhammad Shaban
- Department of Computer Science, University of Warwick, Coventry, UK
| | - Nasir Rajpoot
- Department of Computer Science, University of Warwick, Coventry, UK
| | - Syed A Khurram
- Unit of Oral & Maxillofacial Pathology, School of Clinical Dentistry, University of Sheffield, Sheffield, UK
| |
Collapse
|
10
|
Helliwell JA, Shelton B, Mahmood H, Blanco-Colino R, Fitzgerald JE, Harrison EM, Bhangu A, Chapman SJ. O32: TRANSPARENCY IN SURGICAL RANDOMISED CONTROLLED TRIALS: CROSS-SECTIONAL, OBSERVATIONAL STUDY. Br J Surg 2021. [DOI: 10.1093/bjs/znab117.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Introduction
Randomised controlled trials (RCT) often provide the scientific basis on which commissioning and treatment decisions are made. It is essential that their results and methods are reported transparently. The aim of this study was to explore transparency with respect to trial registration, disclosure of funding sources, conflicts of interest (COI), and data sharing.
Method
This was a cross-sectional review of surgical RCTs. Data were extracted from RCTs in ten high-impact journals published in the years 2009, 2012, 2015, and 2018. Outcomes of interest were the incidence of reported trial registration, disclosure of funding sources, disclosure of investigator COI, and presence of a statement of data sharing plans.
Result
A total of 475 were eligible for analysis. Trial registration was present in 73 (67%) studies in 2009, 137 (84%) in 2012, 111 (89%) in 2015 and 110 (93%) in 2018. Funding statements were provided in 55%, 65%, 69.4%, and 75.4% of manuscripts, respectively. Conflicts of interest statements were provided in 49.5%, 89.1%, 94.6%, and 98.3% of manuscripts, respectively. Data sharing statements were present in only 15 (3.2%) RCTs. Eleven of these were in studies published most recently in 2018.
Conclusion
Trial registration, presence of funding statements, and disclosure of personal conflicts of interest in surgical RCTs have improved rapidly over the last 10 years. In contrast, disclosure of data sharing plans is exceptionally low. This may contribute to research waste and represents an essential target for improvement.
Take-home message
Trial registration, presence of funding statements, and disclosure of personal conflicts of interest in surgical RCTs have improved rapidly over the last 10 years. In contrast, disclosure of data sharing plans is exceptionally low. This may contribute to research waste and represents an essential target for improvement.
Collapse
Affiliation(s)
- JA Helliwell
- Leeds Institute of Medical Research at St. James's, University of Leeds, Leeds, UK
| | - B Shelton
- Department of Anaesthetics, Guy's & St. Thomas' Hospital, London, UK
| | - H Mahmood
- Chelsea and Westminster Hospital NHS Foundation Trust, London, UK
| | - R Blanco-Colino
- General Surgery Department, Vall d'Hebron University Hospital, Barcelona, Spain
| | - JE Fitzgerald
- Department of Surgery, Royal Free Hospital NHS Trust, London, UK
| | - EM Harrison
- Centre for Medical Informatics, Usher Institute, University of Edinburgh
| | - A Bhangu
- Department of Academic Surgery, University of Birmingham, College of Medical and Dental Sciences, Institute of Translational Medicine, Birmingham, UK
| | - SJ Chapman
- Leeds Institute of Medical Research at St. James's, University of Leeds, Leeds, UK
| |
Collapse
|
11
|
Camalan S, Mahmood H, Binol H, Araújo ALD, Santos-Silva AR, Vargas PA, Lopes MA, Khurram SA, Gurcan MN. Convolutional Neural Network-Based Clinical Predictors of Oral Dysplasia: Class Activation Map Analysis of Deep Learning Results. Cancers (Basel) 2021; 13:cancers13061291. [PMID: 33799466 PMCID: PMC8001078 DOI: 10.3390/cancers13061291] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 03/08/2021] [Accepted: 03/10/2021] [Indexed: 11/16/2022] Open
Abstract
Oral cancer/oral squamous cell carcinoma is among the top ten most common cancers globally, with over 500,000 new cases and 350,000 associated deaths every year worldwide. There is a critical need for objective, novel technologies that facilitate early, accurate diagnosis. For this purpose, we have developed a method to classify images as "suspicious" and "normal" by performing transfer learning on Inception-ResNet-V2 and generated automated heat maps to highlight the region of the images most likely to be involved in decision making. We have tested the developed method's feasibility on two independent datasets of clinical photographic images of 30 and 24 patients from the UK and Brazil, respectively. Both 10-fold cross-validation and leave-one-patient-out validation methods were performed to test the system, achieving accuracies of 73.6% (±19%) and 90.9% (±12%), F1-scores of 97.9% and 87.2%, and precision values of 95.4% and 99.3% at recall values of 100.0% and 81.1% on these two respective cohorts. This study presents several novel findings and approaches, namely the development and validation of our methods on two datasets collected in different countries showing that using patches instead of the whole lesion image leads to better performance and analyzing which regions of the images are predictive of the classes using class activation map analysis.
Collapse
Affiliation(s)
- Seda Camalan
- Center for Biomedical Informatics, Wake Forest School of Medicine, Winston-Salem, NC 27101, USA; (H.B.); (M.N.G.)
- Correspondence: ; Tel.: +1-(336)-713-7675
| | - Hanya Mahmood
- School of Clinical Dentistry, The University of Sheffield, Sheffield S10 2TA, UK; (H.M.); (S.A.K.)
| | - Hamidullah Binol
- Center for Biomedical Informatics, Wake Forest School of Medicine, Winston-Salem, NC 27101, USA; (H.B.); (M.N.G.)
| | - Anna Luiza Damaceno Araújo
- Oral Diagnosis Department, Semiology and Oral Pathology Areas, Piracicaba Dental School, University of Campinas (UNICAMP), Bairro Areão, Piracicaba 13414-903, São Paulo, Brazil; (A.L.D.A.); (A.R.S.-S.); (P.A.V.); (M.A.L.)
| | - Alan Roger Santos-Silva
- Oral Diagnosis Department, Semiology and Oral Pathology Areas, Piracicaba Dental School, University of Campinas (UNICAMP), Bairro Areão, Piracicaba 13414-903, São Paulo, Brazil; (A.L.D.A.); (A.R.S.-S.); (P.A.V.); (M.A.L.)
| | - Pablo Agustin Vargas
- Oral Diagnosis Department, Semiology and Oral Pathology Areas, Piracicaba Dental School, University of Campinas (UNICAMP), Bairro Areão, Piracicaba 13414-903, São Paulo, Brazil; (A.L.D.A.); (A.R.S.-S.); (P.A.V.); (M.A.L.)
| | - Marcio Ajudarte Lopes
- Oral Diagnosis Department, Semiology and Oral Pathology Areas, Piracicaba Dental School, University of Campinas (UNICAMP), Bairro Areão, Piracicaba 13414-903, São Paulo, Brazil; (A.L.D.A.); (A.R.S.-S.); (P.A.V.); (M.A.L.)
| | - Syed Ali Khurram
- School of Clinical Dentistry, The University of Sheffield, Sheffield S10 2TA, UK; (H.M.); (S.A.K.)
| | - Metin N. Gurcan
- Center for Biomedical Informatics, Wake Forest School of Medicine, Winston-Salem, NC 27101, USA; (H.B.); (M.N.G.)
| |
Collapse
|
12
|
Helliwell JA, Shelton B, Mahmood H, Blanco-Colino R, Fitzgerald JE, Harrison EM, Bhangu A, Chapman SJ. Transparency in surgical randomized clinical trials: cross-sectional observational study. BJS Open 2020; 4:977-984. [PMID: 33179875 PMCID: PMC7528514 DOI: 10.1002/bjs5.50333] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Accepted: 07/06/2020] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND RCTs provide the scientific basis upon which treatment decisions are made. To facilitate critical review, it is important that methods and results are reported transparently. The aim of this study was to explore transparency in surgical RCTs with respect to trial registration, disclosure of funding sources, declarations of investigator conflicts and data-sharing. METHODS This was a cross-sectional review of published surgical RCTs. Ten high-impact journals were searched systematically for RCTs published in years 2009, 2012, 2015 and 2018. Four domains of transparency were explored: trial registration, disclosure of funding, disclosure of investigator conflicts, and a statement relating to data-sharing. RESULTS Of 611 RCTs, 475 were eligible for analysis. Some 397 RCTs (83.6 per cent) were registered on a trial database, of which 190 (47·9 per cent) had been registered prospectively. Prospective registration increased over time (26 per cent in 2009, 33·0 per cent in 2012, 54 per cent in 2015, and 72·7 per cent in 2018). Funding disclosure was present in 55·0, 65·0, 69·4 and 75·4 per cent of manuscripts respectively. Conflict of interest disclosure was present in 49·5, 89·1, 94·6 and 98·3 per cent of manuscripts across the same time periods. Data-sharing statements were present in only 15 RCTs (3·2 per cent), 11 of which were published in 2018. CONCLUSION Trial registration, disclosure of funding and disclosure of investigator conflicts in surgical RCTs have improved markedly over the past 10 years. Disclosure of data-sharing plans is exceptionally low. This may contribute to research waste and represents a target for improvement.
Collapse
Affiliation(s)
- J A Helliwell
- Leeds Institute of Medical Research at St James's, University of Leeds, Leeds, UK
| | - B Shelton
- Department of Anaesthetics, Guy's and St Thomas' Hospital, London, UK
| | - H Mahmood
- Chelsea and Westminster Hospital NHS Foundation Trust, London, UK
| | - R Blanco-Colino
- General Surgery Department, Vall d'Hebron University Hospital, Barcelona, Spain
| | - J E Fitzgerald
- Department of Surgery, Royal Free Hospital NHS Trust, London, UK
| | - E M Harrison
- Centre for Medical Informatics, Usher Institute, University of Edinburgh, Edinburgh, UK
| | - A Bhangu
- Department of Academic Surgery, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - S J Chapman
- Leeds Institute of Medical Research at St James's, University of Leeds, Leeds, UK
| |
Collapse
|
13
|
Mahmood H, Shaban M, Indave BI, Santos-Silva AR, Rajpoot N, Khurram SA. Use of artificial intelligence in diagnosis of head and neck precancerous and cancerous lesions: A systematic review. Oral Oncol 2020; 110:104885. [PMID: 32674040 DOI: 10.1016/j.oraloncology.2020.104885] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 06/28/2020] [Accepted: 06/29/2020] [Indexed: 01/21/2023]
Abstract
This systematic review analyses and describes the application and diagnostic accuracy of Artificial Intelligence (AI) methods used for detection and grading of potentially malignant (pre-cancerous) and cancerous head and neck lesions using whole slide images (WSI) of human tissue slides. Electronic databases MEDLINE via OVID, Scopus and Web of Science were searched between October 2009 - April 2020. Tailored search-strings were developed using database-specific terms. Studies were selected using a strict inclusion criterion following PRISMA Guidelines. Risk of bias assessment was conducted using a tailored QUADAS-2 tool. Out of 315 records, 11 fulfilled the inclusion criteria. AI-based methods were employed for analysis of specific histological features for oral epithelial dysplasia (n = 1), oral submucous fibrosis (n = 5), oral squamous cell carcinoma (n = 4) and oropharyngeal squamous cell carcinoma (n = 1). A combination of heuristics, supervised and unsupervised learning methods were employed, including more than 10 different classification and segmentation techniques. Most studies used uni-centric datasets (range 40-270 images) comprising small sub-images within WSI with accuracy between 79 and 100%. This review provides early evidence to support the potential application of supervised machine learning methods as a diagnostic aid for some oral potentially malignant and malignant lesions; however, there is a paucity of evidence using AI for diagnosis of other head and neck pathologies. Overall, the quality of evidence is low, with most studies showing a high risk of bias which is likely to have overestimated accuracy rates. This review highlights the need for development of state-of-the-art deep learning techniques in future head and neck research.
Collapse
Affiliation(s)
- H Mahmood
- Dr Hanya Mahmood (NIHR Academic Clinical Fellow in Oral Surgery), Academic Unit of Oral & Maxillofacial Surgery, School of Clinical Dentistry, University of Sheffield, 19 Claremont Crescent, S10 2TA, UK.
| | - M Shaban
- Muhammad Shaban (Research Student), Department of Computer Science, University of Warwick, Coventry, UK.
| | - B I Indave
- Blanca Iciar Indave Ruiz (Systematic Reviewer), WHO/IARC Classification of Tumours Group, International Agency for Research on Cancer, Lyon, France.
| | - A R Santos-Silva
- Alan Roger Santos-Silva (Associate Professor in Oral Medicine & Pathology), Oral Diagnosis Department, Piracicaba Dental School, University of Campinas, Piracicaba, São Paulo, Brazil.
| | - N Rajpoot
- Nasir Rajpoot (Professor of Computational Pathology), Department of Computer Science, University of Warwick, Coventry, UK.
| | - S A Khurram
- Syed Ali Khurram (Senior Clinical Lecturer & Honorary Consultant in Oral & Maxillofacial Pathology), Academic Unit of Oral & Maxillofacial Pathology, School of Clinical Dentistry, University of Sheffield, 19 Claremont Crescent, UK.
| |
Collapse
|
14
|
Abstract
Introduction The complex nature of facial pain conditions creates a diagnostic challenge which may necessitate specialist referral.Aim To identify the case mix presenting to a specialist tertiary care facial pain clinic.Methods A retrospective review of 112 patient records was undertaken. Trends in provisional diagnoses from referrers and the correlation to diagnoses made following specialist consultation were reviewed.Results The most common provisional diagnoses recorded in referral letters were painful temporomandibular disorders, trigeminal neuralgia and persistent idiopathic facial pain (PIFP). Over a quarter of referrals did not include a provisional diagnosis. Following assessment, only one case was not given a definitive diagnosis and no patients were diagnosed with PIFP. A causative factor was identified in all the initially queried PIFP cases, and painful post-traumatic trigeminal neuropathic pain was found in multiple patients.Conclusions Painful post-traumatic trigeminal neuropathic pain should be considered if pain onset coincides with dental treatment or other traumatic events. PIFP is a rare facial pain diagnosis and may be over-diagnosed by dental and medical practitioners. It is important to systematically exclude other causes before reaching this diagnosis. This will facilitate effective treatment, manage patient expectations and potentially reduce unnecessary referrals.
Collapse
Affiliation(s)
- Claire L Wilson
- Sheffield Teaching Hospitals NHS Foundation Trust, Oral Surgery, Charles Clifford Dental Hospital, 76 Wellesley Road, Sheffield, South Yorkshire, S10 2SZ, UK; Department of Oral and Maxillofacial Surgery, School of Clinical Dentistry, University of Sheffield, Charles Clifford Dental Hospital, Wellesley Road, Sheffield, S10 2TA, UK.
| | - Hanya Mahmood
- Sheffield Teaching Hospitals NHS Foundation Trust, Oral Surgery, Charles Clifford Dental Hospital, 76 Wellesley Road, Sheffield, South Yorkshire, S10 2SZ, UK; Department of Oral and Maxillofacial Surgery, School of Clinical Dentistry, University of Sheffield, Charles Clifford Dental Hospital, Wellesley Road, Sheffield, S10 2TA, UK
| | - Alison Loescher
- Sheffield Teaching Hospitals NHS Foundation Trust, Oral Surgery, Charles Clifford Dental Hospital, 76 Wellesley Road, Sheffield, South Yorkshire, S10 2SZ, UK; Department of Oral and Maxillofacial Surgery, School of Clinical Dentistry, University of Sheffield, Charles Clifford Dental Hospital, Wellesley Road, Sheffield, S10 2TA, UK
| |
Collapse
|
15
|
Mahmood H, Sheraz SY, Kiani H, Mckinstry B, Fairhust K, Luz S, Hazir T, Hamneed R. mHealth for Pneumonia Prevention. Eur J Public Health 2020. [DOI: 10.1093/eurpub/ckaa165.1033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Introduction
Pneumonia contributes to 14% of under-five mortality in Pakistan. Delayed care seeking is one of the causes of death due to this disease. One of the most impactful strategies can be timely healthcare-seeking through CHW's. We, therefore propose to develop an intervention package for educating caregivers on pneumonia by Lady Health Workers (LHWs).
Methodology
This first phase of the feasibility study comprised of a systematic review (SR) on best mobile health-based approaches for CHWs on the management of childhood illness followed by formative research (FR). In the systematic review, 6 databases were searched, and 22 articles were included. Based on findings of SR and FR along with guidelines of WHO and UNICEF, a mobile application-based intervention package will be developed in the second phase. Recruited LHWs will use the mobile application in their monthly visits for 6 months. Text and voice messages will be sent to each caregiver. Pre and Post-intervention surveys will be conducted with the recruited caregivers to assess the impact of the intervention and FGDs with the recruited LHWs to get feedback on the intervention.
Findings
Findings of the systematic review suggest that the most common approaches of mobile health for community health workers is the use of a customized application for disease management and data collection. Findings of formative research suggest that the majority of the caregivers were not aware of the danger signs of pneumonia. Respondents agreed to the importance of an educational intervention package on pneumonia and its prevention by LHWs through mHealth.
Acknowledgment
This research was commissioned by the National Institute of Health Research using Official Development Assistance (ODA) funding. The views expressed in this publication are those of author(s) and not necessarily those of NHS, the National Institute of Health Research, or the development of Health.
Key messages
mHealth intervention employing community health workers can be a useful mode of improving healthcare services. Use of technology to raise awareness and delivered health-related information at community level can prove tremendously helpful for illness management.
Collapse
Affiliation(s)
- H Mahmood
- Maternal Neonatal and Child Health Research Network, Islamabad, Pakistan
| | - S Y Sheraz
- International Research Force, Islamabad, Pakistan
| | - H Kiani
- Maternal Neonatal and Child Health Research Network, Islamabad, Pakistan
| | | | | | - S Luz
- University of Edinburgh, Scotland, UK
| | - T Hazir
- Maternal Neonatal and Child Health Research Network, Islamabad, Pakistan
| | - R Hamneed
- Maternal Neonatal and Child Health Research Network, Islamabad, Pakistan
| |
Collapse
|
16
|
Mahmood H, Kiani HR, Sheraz SY, Nair H, Worth A, Campbell H, Sheikh A, Hazir T. To document Pneumonia case management practices in selected communities of Pakistan. Eur J Public Health 2020. [DOI: 10.1093/eurpub/ckaa166.997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
The cornerstone of ARI control programs is standardized case management. According to this strategy thousands of healthcare providers have been trained in Pakistan. Given unchanged mortality statistics, there is a concern that these pieces of training have not been able to deliver the outcome.
Purpose of Study
To document current under-five pneumonia case management practices at the community level, first level care facility (FLCF) and specialist level across Pakistan.
Methodology
32 structured; disguised observations were done using an observation tool based on standard WHO pneumonia case management guidelines from each of four administrative units and the federal capital of Pakistan across the LHW level, FLCF and tertiary level. Thus, a total of 160 observations were made.
Results
At the community level, 100% LHW's did not ask for danger signs & did not expose the chest, 98% misdiagnosed pneumonia and100% prescribed antibiotics to irrespective of diagnosis. At FLCF 0.6% inquired about danger signs, 98% did not expose the chest, 80% did not use WHO classification for diagnosing pneumonia and 100% prescribed antibiotics irrespective of diagnosis. At GP's and specialist level in the private sector, 28 % inquired about at least one danger sign, 82% exposed chest, 58% did not use WHO classification for diagnosis, and 17% wrongly prescribed antibiotics. Whereas in public sector, 7% inquired about at least one danger sign, 78% exposed chest, 64% did not use WHO classification for diagnosis and 28% wrongly prescribed antibiotics.
Acknowledgment of Funding
This research was commissioned by the National Institute of Health Research using Official Development Assistance (ODA) funding. The views expressed in this publication are those of the author(s) and not necessarily those of NHS, the National Institute of Health Research, or the development of Health.
Key messages
Standard pneumonia case management guidelines are not been followed at any level of healthcare systems in Pakistan. Pneumonia case management strategies need to be revised to manage the disease.
Collapse
Affiliation(s)
- H Mahmood
- Maternal Neonatal and Child Health Research Network, Islamabad, Pakistan
| | - H R Kiani
- Maternal Neonatal and Child Health Research Network, Islamabad, Pakistan
| | - S Y Sheraz
- International Research Force, IRF, Pakistan
| | - H Nair
- University of Edinburgh, Scotland, UK
| | - A Worth
- University of Edinburgh, Scotland, UK
| | | | - A Sheikh
- University of Edinburgh, Scotland, UK
| | - T Hazir
- Maternal Neonatal and Child Health Research Network, Islamabad, Pakistan
| |
Collapse
|
17
|
Anabtawi M, Wege J, Mahmood H, Dareen Amro BA, Patterson A. Nodular Eruptions as a Rare Complication of Botulinum Neurotoxin Type-A: Case Series and Review of Literature. Cureus 2020; 12:e10175. [PMID: 33029455 PMCID: PMC7529487 DOI: 10.7759/cureus.10175] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Nodular eruption after botulinum neurotoxin type-A (BoNT-A) treatment is exceedingly rare, and the pathogenesis is poorly understood. This case series reports three patients that developed nodular eruptions following administration of Botox® (onabotulinum neurotoxin type A (ONA) injections). These patients had undergone multiple treatments before and after development of the eruptions which were uneventful. In addition to this, we have reviewed the published literature regarding this condition and have compared and contrasted the similarities and differences with regards to the clinical presentation and treatment with our patient cohort. This case series aims to raise awareness of this rare condition, its importance in relation to patient consent and provides a simplified management approach based on our experience. Further evaluation is needed to determine treatment consensus but conducting such research may prove to be challenging due to this condition being an infrequent encounter.
Collapse
Affiliation(s)
- Mohammed Anabtawi
- Oral and Maxillofacial Surgery, Chesterfield Royal Hospital, Chesterfield, GBR.,Oral and Maxillofacial Surgery, Rotherham General Hospital NHS Foundation Trust, Rotherham, GBR
| | - James Wege
- Oral and Maxillofacial Surgery, Rotherham National Health Service Foundation Trust, Rotherham, GBR
| | - Hanya Mahmood
- Oral Surgery, University of Sheffield, Sheffield, GBR
| | | | - Alan Patterson
- Oral and Maxillofacial Surgery, Rotherham National Health Service Foundation Trust, Rotherham, GBR
| |
Collapse
|
18
|
Anabtawi M, Tweedale H, Mahmood H. The role, efficacy and outcome measures for teriparatide use in the management of medication-related osteonecrosis of the jaw. Int J Oral Maxillofac Surg 2020; 50:501-510. [PMID: 32800674 DOI: 10.1016/j.ijom.2020.07.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 05/14/2020] [Accepted: 07/21/2020] [Indexed: 10/23/2022]
Abstract
Medication-related osteonecrosis of the jaw (MRONJ) is a complex disease which can be associated with multiple morbidities and is challenging to treat. This review evaluates the literature on the role and efficacy of teriparatide (TPTD) as a treatment for MRONJ. The clinical, radiological, histopathological and serological parameters used to assess treatment response have been described. Electronic databases were searched to retrieve articles (April 2005 and April 2020) based on strict inclusion criteria. Seventeen articles were included in this review. Of the 91 patients treated; only six received TPTD as a standalone treatment. There were significant variations in defining treatment outcomes and measuring treatment response. The longest follow-up period was 26 months, and 12 studies failed to report follow-up. The overall quality of evidence is weak with potential for a high risk of bias, making it difficult to determine the efficacy of TPTD and its long-term effects. However, TPTD may play a role in the treatment of intractable MRONJ in osteoporotic patients or those unfit for surgery. Therefore, randomized clinical trials on larger patient cohorts with long-term follow-up is required to confirm efficacy, safety and inform treatment indications for TPTD in the treatment of MRONJ.
Collapse
Affiliation(s)
- M Anabtawi
- Department of Oral and Maxillofacial Surgery, Rotherham General Hospital, Rotherham, UK.
| | - H Tweedale
- Department of Oral and Maxillofacial Surgery, Charles Clifford Dental Hospital, Sheffield, UK
| | - H Mahmood
- Academic Unit of Oral & Maxillofacial Surgery, School of Clinical Dentistry, University of Sheffield, Sheffield, UK
| |
Collapse
|
19
|
Mahmood H, Siddique I, McKechnie A. Antiplatelet drugs: a review of pharmacology and the perioperative management of patients in oral and maxillofacial surgery. Ann R Coll Surg Engl 2020; 102:9-13. [PMID: 31755732 PMCID: PMC6937600 DOI: 10.1308/rcsann.2019.0154] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/08/2019] [Indexed: 12/23/2022] Open
Abstract
INTRODUCTION An increasing number of patients are taking oral antiplatelet agents. As a result, there is an important patient safety concern in relation to the potential risk of bleeding complications following major oral and maxillofacial surgery. Surgeons are increasingly likely to be faced with a dilemma of either continuing antiplatelet therapy and risking serious haemorrhage or withholding therapy and risking fatal thromboembolic complications. While there are national recommendations for patients taking oral antiplatelet drugs undergoing invasive minor oral surgery, there are still no evidence-based guidelines for the management of these patients undergoing major oral and maxillofacial surgery. METHODS MEDLINE and EMBASE databases were searched to retrieve all relevant articles published to 31 December 2017. FINDINGS A brief outline of the commonly used antiplatelet agents including their pharmacology and therapeutic indications is discussed, together with the haemorrhagic and thromboembolic risks of continuing or altering the antiplatelet regimen in the perioperative period. Finally, a protocol for the management of oral and maxillofacial patients on antiplatelet agents is presented. CONCLUSIONS Most current evidence to guide decision making is based upon non-randomised observational studies, which attempts to provide the safest possible management of patients on antiplatelet therapy. Large randomised clinical trials are lacking.
Collapse
Affiliation(s)
- H Mahmood
- Department of Oral & Maxillofacial Surgery, School of Clinical Dentistry, University of Sheffield, Sheffield, UK
| | - I Siddique
- Department of Oral & Maxillofacial Surgery, Bradford Royal Infirmary, Bradford, UK
| | - A McKechnie
- Department of Oral & Maxillofacial Surgery, Leeds Dental Institute, Leeds, UK
| |
Collapse
|
20
|
|
21
|
Abstract
Inferior alveolar nerve (IAN) damage is a rare but recognised complication of dental procedures including third molar surgery, implant surgery, endodontic treatment and local anaesthetic injections. However, it is rarely caused by orthodontic tooth movement. This report highlights a case of temporary IAN anaesthesia to the right mental region, which was likely to have occurred secondary to the orthodontic uprighting of a lingually tilted molar using a high strength arch wire. Immediate deactivation of the appliance and an acute reducing dose of systemic steroids resulted in complete resolution of symptoms. To the best of the author’s knowledge, there have been seven previously described cases of IAN paraesthesia but no cases reporting IAN anaesthesia secondary to orthodontic fixed-appliance treatment. This case highlights the importance of dentists practising orthodontics to have an awareness of the clinical and radiographic signs that may indicate a high-risk case requiring appropriate referral for cone beam imaging and careful orthodontic planning. Furthermore, this case emphasises the need to warn high-risk patients of the symptoms of this rare complication and how it may be managed. This will ultimately help to minimise the risk of litigation and optimise patient experience and care.
Collapse
Affiliation(s)
- Hanya Mahmood
- Department of Oral Surgery, School of Clinical Dentistry, Sheffield, UK
| | - Melanie Stern
- Department of Orthodontics, School of Clinical Dentistry, Sheffield, UK
| | - Simon Atkins
- Department of Oral Surgery, School of Clinical Dentistry, Sheffield, UK
| |
Collapse
|
22
|
Khaleeq U, Rashid A, Abbas T, Rasheed S, Raza A, Khan M, Mahmood H, Hameed Y, Hussain R, Jamshed A. Function preservation with trimodality therapy in locally advanced oral tongue squamous cell carcinoma. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy438.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
23
|
Rivera S, Petit C, Martin AN, Cacicedo J, Leaman O, Rosselot MCA, Lazaryan A, Akperov K, Sinaika V, Monestel R, Fröbe A, Kevlishvili G, Stojkovski I, Magsar B, Corovic M, Mahmood H, Alauddin Z, Barriga O, Lucas M, Palmu M, Zubizarreta E, Hopkins K, Eriksen J. Long-term impact on contouring skills achieved by online learning. An ESTRO-FALCON-IAEA study. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.1174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
24
|
Mahmood H, Murphy C, Oktseloglou V. Cystadenoma of the mandible: a rare presentation. Br J Oral Maxillofac Surg 2018; 56:540-542. [DOI: 10.1016/j.bjoms.2018.03.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Accepted: 03/13/2018] [Indexed: 10/17/2022]
|
25
|
Abstract
In the pharmaceutical industry, there are challenges in topical and transdermal administration of drugs, which are sparingly soluble in water and most organic solvents. Ionic liquids (ILs) have been found to be very effective for dissolution of sparingly soluble drugs. However, hydrophilic IL-borne drugs cannot penetrate into or across the skin because of the highly hydrophobic barrier function of the outer skin. In this chapter we report a novel IL-in-oil (IL/o) microemulsion (ME) that is able to dissolve a significant amount of sparingly soluble drug, acyclovir, in the IL core while the continuous oil phase can provide the desired features for topical/transdermal transport through the skin. The ME is composed of a blend of the nonionic surfactants polyoxyethylene sorbitan monooleate (Tween 80) and sorbitan laurate (Span 20), isopropyl myristate (IPM) as an oil phase, and the IL [C1mim][(MeO)2PO2] (dimethylimidazolium dimethylphosphate) as a dispersed phase. The size and size distribution of the aggregates in the MEs were characterized by dynamic light scattering, showing formation of the nanocarrier in the size range 8–34 nm. In vitro drug permeation studies into and across the skin showed that the IL/o ME increased drug administration compared with other formulations. The safety profile of the new carrier was evaluated using a cytotoxicity assay on the human epidermal model LabCyte. We believe that these IL-assisted nonaqueous MEs can serve as a versatile and efficient nanodelivery system for sparingly soluble drug molecules.
Collapse
Affiliation(s)
- M. Moniruzzaman
- Universiti Teknologi PETRONAS, Chemical Engineering Department Seri Iskandar 32610 Perak Malaysia
- Universiti Teknologi PETRONAS, Centre of Research in Ionic Liquids (CORIL) Seri Iskandar 32610 Perak Malaysia
| | - H. Mahmood
- Universiti Teknologi PETRONAS, Chemical Engineering Department Seri Iskandar 32610 Perak Malaysia
| | - M. Goto
- Kyushu University, Department of Applied Chemistry, Graduate School of Engineering 744 Moto-oka Fukuoka 819-0395 Japan
- Kyushu University, Center for Future Chemistry Fukuoka 819-0395 Japan
| |
Collapse
|
26
|
Spinthakis N, Farag M, Gorog D, Mahmood H, Prasad A, Srinivasan M. P1378Percutaneous coronary intervention with drug-eluting stent versus coronary artery bypass grafting: a meta-analysis of patients with left main coronary artery disease. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p1378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
27
|
Pegoretti A, Mahmood H, Pedrazzoli D, Kalaitzidou K. Improving fiber/matrix interfacial strength through graphene and graphene-oxide nano platelets. ACTA ACUST UNITED AC 2016. [DOI: 10.1088/1757-899x/139/1/012004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
28
|
Rosenblatt E, Jones G, El-Mongy M, Mahmood H, Marinello J, Elzawawy A, Shahid S, Filali-Benaceur D, Yarney J, Moscol Ledesma J, Bese N, Campbell O. OC-0189: Irradiation of the supraclavicular nodal region in postmastectomy radiotherapy; an IAEA randomized trial. Radiother Oncol 2015. [DOI: 10.1016/s0167-8140(15)40187-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
29
|
Chapman S, Shelton B, Mahmood H, Fitzgerald J, Harrison E, Bhangu A. Promoting transparency in clinical research: Systematic review of disclosure and data-sharing policies in surgical journals. Int J Surg 2014. [DOI: 10.1016/j.ijsu.2014.07.238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
30
|
Mahmood H, White L, Li T, Mohammed-Ali R. Third Molar Extractions: Are we over prescribing the Cone Beam CT? Br J Oral Maxillofac Surg 2014. [DOI: 10.1016/j.bjoms.2014.07.176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
31
|
Javed Q, Wang FP, Rafique MY, Toufiq AM, Li QS, Mahmood H, Khan W. Diameter-controlled synthesis of α-Mn2O3 nanorods and nanowires with enhanced surface morphology and optical properties. Nanotechnology 2012; 23:415603. [PMID: 23011093 DOI: 10.1088/0957-4484/23/41/415603] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Single crystalline α-Mn(2)O(3) nanorods, and nanowires with and without nanoparticles on them have been successfully synthesized by a template-free hydrothermal route. The variation in hydrothermal temperature has not only affected the diameter of the nanostructure but also noticeably affected the morphology and optical properties of the α-Mn(2)O(3) nanostructure. The influence of temperature on the diameter, crystallinity, surface morphology and optical properties of the α-Mn(2)O(3) nanostructure have been characterized by x-ray diffraction, scanning electron microscopy, energy dispersive x-ray analysis, transmission electron microscopy, high resolution transmission electron microscopy, Raman spectroscopy and UV-visible spectroscopy and photoluminescent (PL) spectroscopy. The results showed in our experimental conditions that single crystalline nanorods of the α-Mn(2)O(3) were obtained at a temperature of 180 °C, while single crystalline nanowires were obtained by increasing the temperature to 240 and 300 °C. Nanowires with nanoparticles on them were obtained by increasing the temperature to 240 °C and nanowires without nanoparticles on them were obtained by increasing the temperature to 300 °C. The nanorods and nanowires obtained had a well-defined morphology. The nanowires synthesized at 300 °C exhibited an intense orange band PL spectrum.
Collapse
Affiliation(s)
- Q Javed
- Department of Physics, School of Applied Sciences, University of Science and Technology Beijing, Beijing 100083, People's Republic of China
| | | | | | | | | | | | | |
Collapse
|
32
|
Ahmad S, Mahmood H, Kanwal S, Mahmood A, Ahmad K, Masood M, Faheem M, Akbar N, Hafeez M. Relationship of Age at First Live Birth, Parity and Duration of Breast Feeding with Non Familial Breast Cancer in Pakistani Women. A Study of the Cancer Research Group Pakistan. Cancer Res 2009. [DOI: 10.1158/0008-5472.sabcs-09-2071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background and objectives; This multicenter case control study is being conducted at seven different centers in Pakistan in order to find out the association and relationship of different hormonal and reproductive factors with breast cancer. These factors have been identified either as risk factors or protective factors for breast cancer in other communities but not in Pakistani women. Preliminary results from four centers are being reported here.Method; Patients attending these cancer treatment centers were interviewed by the trained medical personals and the findings were recorded in a proforma. Age and area matched unrelated controls were randomly selected and interviewed with same questions and findings were recorded in a corresponding proforma. SPSS version 11.5 was used for statistical analysis.Results; From June, 2008 to May, 2009 six hundred eighty eight cases were compared with an equal number of controls. Median age of cases was 47 years (26-70 years) and controls 47.5 years (25-71 years). One hundred ninety eight of cases (28.78%) and 208 of controls (30.23 %) gave first full term live birth before the age of 20. Sixty two cases (09.01%) and 38 controls (5.52%) gave first full term live birth after the age of 30. Seventy one cases and 65 controls were nulliparous.Fifty cases (07.27%) and 51 controls (07.41%) had only one child whereas 104 (15.12%) cases and 118 controls (17.15%) had more then 7 children.Breast feeding duration was more then 24 months in 410 (72.31%) of all women who had more then 1 child. Duration of breast feeding in cases Vs. control in women with 2-4 children, 5-7 children and more then 7 children was similar. Statistical analysis reveals that first live birth below the age of 20 and duration of breast feeding of greater then 24 months duration are not associated as protective factors in this patient population. Odds ratio of 1.35, 95% CI; 1.01-1.70 and 1.014, 95% CI; 0.80-1.22 respectively. Age at first live birth after 30 years of age seems to be positively associated with breast cancer. Odds ratio of 1.75, 95% CI; 1.15-2.65. These results do not support the young age at first full term pregnancy and prolonged duration of breast feeding as protective factors against the breast cancer.Key Words: Breast Cancer, Breast feeding, Parity, Risk Factor
Citation Information: Cancer Res 2009;69(24 Suppl):Abstract nr 2071.
Collapse
Affiliation(s)
- S. Ahmad
- 1King Edward Medical University, Pakistan
| | - H. Mahmood
- 2Nuclear Medicine Oncology Radiotherapy Institute, Pakistan
| | - S. Kanwal
- 1King Edward Medical University, Pakistan
| | | | - K. Ahmad
- 1King Edward Medical University, Pakistan
| | - M. Masood
- 4Institute of Nuclear Medicine and Oncology, Pakistan
| | - M. Faheem
- 2Nuclear Medicine Oncology Radiotherapy Institute, Pakistan
| | - N. Akbar
- 1King Edward Medical University, Pakistan
| | - M. Hafeez
- 1King Edward Medical University, Pakistan
| |
Collapse
|
33
|
Hussain A, Mahmood H, Singhal T, Balakrishnan S, El-Hasani S. What is positive appendicitis? A new answer to an old question. Clinical, macroscopical and microscopical findings in 200 consecutive appendectomies. Singapore Med J 2009; 50:1145-1149. [PMID: 20087549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
INTRODUCTION The correlation between clinical and histopathology findings in appendicitis has been highlighted by many studies. However, the impact of this correlation on the surgical decision to remove a normal-looking appendix is still vague, with no clear definition of positive appendicitis. The aim of this study was to correlate the histological, operative and clinical diagnoses of acute appendicitis (AA). METHODS 200 patients with a preoperative diagnosis of AA underwent laparoscopic appendectomy. A single consultant surgeon performed all the procedures. The clinical, macroscopical and microscopical outcomes were reported and analysed. Follow-up assessment was performed as an outpatient appointment. RESULTS 112 women and 88 men were included in this study. The mean age was 18.8 (range 8-83) years. Macroscopical appendicitis was confirmed in 139 (69.5 percent) patients, while microscopical appendicitis was reported in 147 (73.5 percent) specimens of the appendix. Ten (7.2 percent) out of 139 patients who were macroscopically positive were found to have a normal appendix on microscopical examination. Different pathologies were found in 21 (10.5 percent) patients, and all underwent appendectomy. Microscopical appendicitis was confirmed in 10 (25 percent) out of 40 patients who had a normal-looking appendix. CONCLUSION The correlation of the clinical, microscopical and macroscopical findings in AA is important in order to understand the natural history of appendicitis, and this may help to formulate a sound surgical decision. These findings are supportive of justifying appendectomy for normal-looking appendices, if no other pathology is found.
Collapse
Affiliation(s)
- A Hussain
- Minimal Access Unit, Department of General Surgery, Princess Royal University Hospital, Farnborough Common, Orpington, BR6 8ND, Greater London, UK.
| | | | | | | | | |
Collapse
|
34
|
Hussain A, Mahmood H, Ansari T, El-Hasani S. Pneumomediastinum, stomach wall and hepatic portal vein gas secondary to partial necrosis of the stomach wall. Singapore Med J 2009; 50:e166-e169. [PMID: 19495499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The combination of pneumomediastinum, gastric wall gas and hepatic portal vein gas is a challenging clinical problem. Although different causes of the individual gas sign have been reported in the literature, the cause of a triad of these signs in a single patient is less clear, and represents an extremely rare condition. A 65-year-old man presented with severe lower chest and epigastric pain of a few hours' duration. Initial assessment confirmed epigastric tenderness. Computed tomography showed pneumomediastinum, air in the stomach wall, hepatic portal vein gas and bowel dilatation. Small bowel and right colon dilatation was confirmed at laparotomy. The patient was treated subsequently with antibiotics to cover Gram-positive and Gram-negative bacteria, and anaerobes. The patient was discharged in good general condition on the 12th postoperative day. In conclusion, the triad of pneumomediastinum, gastric wall gas and hepatic portal vein gas is an extremely rare condition and associated with gastric necrosis.
Collapse
Affiliation(s)
- A Hussain
- Department of General Surgery, Princess Royal University Hospital, Farnborough Common, Orpington BR6 8ND, Kent, UK.
| | | | | | | |
Collapse
|
35
|
Hussain A, Mahmood H. Letter 2: use of enoxaparin results in more haemorrhagic complications after breast surgery than unfractionated heparin (Br J Surg 2008; 95: 834-836). Br J Surg 2008; 95:1426; author reply 1427. [PMID: 18844277 DOI: 10.1002/bjs.6420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
36
|
Hussain A, Mahmood H, Nicholls J, El-Hasani S. Continuous figure-of-eight suturing in upper and lower gastrointestinal anastomosis. Singapore Med J 2008; 49:672-675. [PMID: 18830539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
INTRODUCTION The optimal technique for gastrointestinal anastomosis is controversial. The three most popular techniques are two layers, one layer and the stapling method. However, there is no universal agreement on the best technique. The aim of this study was to evaluate the safety, feasibility, and efficacy of continuous figure-of-eight suturing in gastrointestinal anastomosis. METHODS This was a retrospective study of 170 patients who underwent gastrointestinal anastomosis using continuous figure-of-eight suturing for the first layer and continuous seromuscular suturing for the second layer from August 1993 to January 2006. All operations were performed by a single consultant surgeon. We assessed each anastomosis by checking the integrity, vascularity and patency, and also ensuring tension-free status. Postoperatively, patients were managed by routine care of intravenous fluids and nasogastric tube until they had active bowel sounds and started absorbing. Imaging was arranged for patients who developed clinical signs and symptoms of leak. RESULTS 170 patients underwent gastrointestinal anastomosis by continuous figure-of-eight suturing for different pathologies over a two-and-a-half-year period. There were 92 (54.1 percent) men and 78 (45.9 percent) women. The mean age of the patients was 56 (range 20-88) years. The median follow-up was 74 months. There were 124 (72.9 percent) small bowel anastomosis and 46 (27.1 percent) large bowel anastomosis. An important complication after gastrointestinal anastomosis was leakage, which was reported in three (1.8 percent) patients. One of them had gastric cancer, one had Crohn's disease and one had intestinal ischaemia. No mortality was reported in relation to anastomotic failure. Two (1.2 percent) patients developed stenosis and 15 (8.8 percent) patients died because of progression of their disease or other pathologies during the follow-up. CONCLUSION Continuous figure-of-eight suturing is a simple, easy to learn, safe and satisfactory upper and lower gastrointestinal anastomosis technique.
Collapse
Affiliation(s)
- A Hussain
- Department of General Surgery, Princess Royal University Hospital, Farnborough Common, Orpington BR6 8ND, Kent, UK.
| | | | | | | |
Collapse
|
37
|
Hussain A, Mahmood H, Nicholls J, El-Hasani S. Laparoscopic ventral hernia repair. Our experience of 61 consecutive series: Prospective study. Int J Surg 2008; 6:15-9. [DOI: 10.1016/j.ijsu.2007.11.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2007] [Revised: 11/23/2007] [Accepted: 11/27/2007] [Indexed: 10/22/2022]
|
38
|
Hussain A, Mahmood H, Shuaib S, El-Hasani S. Prevention of trocar site incisional hernia following laparoscopic ventral hernia repair. JSLS 2008; 12:206-9. [PMID: 18435900 PMCID: PMC3016175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND AND OBJECTIVES Trocar-site incisional hernia following laparoscopic ventral hernia repair is reported to have a relatively high incidence. The main reasons are trocar diameter and design, pre-existing fascial defects, and some operation- and patient-related factors. The aim of this article to show a new technique of ventral hernia repair that could prevent trocar site incisional hernia. METHODS After establishing the pneumoperitoneum, three 5-mm ports are inserted in positions according to the site and size of the hernia. The procedure begins by dissection of the adhesions of bowel loops or omentum (if any) from the hernia to clear a good margin for mesh coverage. Then a single 10-mm to 15-mm port (mesh insertion port) is inserted in the center of the ventral hernia depending on the size of the mesh. The mesh is fixed in position with a 5-mm tacker. The peritoneum and underlying superficial fascia are carefully closed before closing the skin. RESULTS A total of 35 patients were recruited for this method. The mean hospital stay was 1.5 days, the mean age was 50.35 years and the mean operative time was 40 minutes. In all patients, 10x15-cm ePTFE was used. No single incidence of trocar-site incisional hernia occurred during a mean follow-up of 2 years. Three (8.57%) patients developed complications and no mortality was reported. CONCLUSION The mesh introduction through the port, which is situated at the center of the hernia defect is a simple, cost-effective technique and will prevent trocar-site incisional hernia.
Collapse
|
39
|
Beaumont M, Duggal HV, Mahmood H, Olowokure B. A survey of the preparedness for an influenza pandemic of general practitioners in the West Midlands, UK. Eur J Clin Microbiol Infect Dis 2007; 26:819-23. [PMID: 17690927 PMCID: PMC7088097 DOI: 10.1007/s10096-007-0377-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
There is a lack of evidence regarding the preparedness of general practitioners (GPs) to respond to pandemic influenza. A postal questionnaire survey was conducted to explore the self-perceived pandemic preparedness of GPs in the West Midlands, United Kingdom, and to determine differences between urban and non-urban GPs. The postal questionnaire was sent out to 773 GPs in November 2005, and a reminder was sent in January 2006. In all, 427/773 (55%) questionnaires were returned, and 56% of respondents were aware of influenza pandemic preparedness plans. Approximately one-quarter of respondents (28%, 114/401) thought the response of their practice to a pandemic event would be very poor/poor. Non-urban GPs were significantly more likely to rate the response of their practice to a pandemic as likely to be poor (OR 3.01, 95%CI 1.03–8.76) and were less likely to be aware of pandemic preparedness plans (OR 0.62, 95%CI 0.39–0.99). Non-urban GPs were also significantly more likely to feel less confident in their ability to explain to their patients what to do and why during an influenza pandemic than GPs based in urban areas (OR 4.68, 95%CI 1.78–12.31). GPs rating of the odds of a pandemic affecting the United Kingdom did not differ significantly by geographic location. The results of this paper can be used to inform and influence public health policy and as evidence of a need to provide additional education and training to improve pandemic preparedness among GPs, in particular those in non-urban areas.
Collapse
Affiliation(s)
- M. Beaumont
- Shropshire and Staffordshire Health Protection Unit, Mellor House, Corporation Street, Stafford, ST16 3SR UK
| | - H. V. Duggal
- Shropshire and Staffordshire Health Protection Unit, Mellor House, Corporation Street, Stafford, ST16 3SR UK
| | - H. Mahmood
- Regional Surveillance Unit (West Midlands), Health Protection Agency, 9th Floor Ladywood House, 45 Stephenson Street, Birmingham, B2 4DY UK
| | - B. Olowokure
- Regional Surveillance Unit (West Midlands), Health Protection Agency, 9th Floor Ladywood House, 45 Stephenson Street, Birmingham, B2 4DY UK
- Health Protection Research and Development Unit, Department of Public Health and Epidemiology, University of Birmingham, Birmingham, B15 2TT UK
| |
Collapse
|
40
|
Lakhani A, Mahmood H, Laeeq A, Mansoor S, Lodhi S, Majid S, Kizilbash Q, Altaf A. Viral hemorrhagic fever in Pakistan: awareness among health care personnel. J PAK MED ASSOC 2002; 52:214-7. [PMID: 12174494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
Abstract
OBJECTIVE To assess the level of knowledge regarding viral hemorrhagic fever (VHF) among healthcare personnel at two largest tertiary care hospitals in Karachi, Pakistan. METHODS A cross sectional convenience survey was conducted in February 2001 among doctors, nurses, laboratory technicians and janitors/orderlies of Jinnah Postgraduate Medical Centre and Civil Hospital, Karachi. The questionnaire included demographic information with their designation and knowledge level regarding VHF management, spread and prevention. Frequencies of the answers to each question were calculated for all questions and scores were assigned. The frequencies were also calculated on the basis of the designation of the respondent so that each group could be examined separately. RESULTS A total of 187 healthcare personnel (121 doctors, 31 nurses, 19 laboratory technicians and 16 janitors/orderlies) were interviewed. Forty three percent (81) respondents were males and 57% (106) were females. By designation 90% doctors, 71% nurses, 32% laboratory technicians and 6% janitors knew about VHF. Only 57% doctors (69) knew the common signs and symptoms of VHF. Isolation for affected patients was suggested by 65% nurses and 6% janitors. Knowledge regarding burial procedure of dead patients was low in all groups. CONCLUSION Differences in knowledge of different groups is obvious but it is essential to raise the knowledge regarding VHF at all levels including the housekeeping staff. There is also a need for continuing medical education (CME) for all health care personnel for the emerging health problems in Pakistan.
Collapse
|
41
|
Abstract
When a dielectric object is placed between two opposed, nonfocused laser beams, the total force acting on the object is zero but the surface forces are additive, thus leading to a stretching of the object along the axis of the beams. Using this principle, we have constructed a device, called an optical stretcher, that can be used to measure the viscoelastic properties of dielectric materials, including biologic materials such as cells, with the sensitivity necessary to distinguish even between different individual cytoskeletal phenotypes. We have successfully used the optical stretcher to deform human erythrocytes and mouse fibroblasts. In the optical stretcher, no focusing is required, thus radiation damage is minimized and the surface forces are not limited by the light power. The magnitude of the deforming forces in the optical stretcher thus bridges the gap between optical tweezers and atomic force microscopy for the study of biologic materials.
Collapse
Affiliation(s)
- J Guck
- Center for Nonlinear Dynamics, Department of Physics, University of Texas at Austin, Texas 78712, USA.
| | | | | | | | | | | |
Collapse
|
42
|
Villareal RP, Kim P, Mahmood H, Civitello A, Ferguson JJ. Meeting highlights : highlights of the 49th scientific sessions of the american college of cardiology. Circulation 2000; 102:E53-60. [PMID: 10961977 DOI: 10.1161/01.cir.102.9.e53] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- RP Villareal
- St Luke's Episcopal Hospital/Texas Heart Institute, Houston, Tex
| | | | | | | | | |
Collapse
|
43
|
Shah BH, Nawaz Z, Pertani SA, Roomi A, Mahmood H, Saeed SA, Gilani AH. Inhibitory effect of curcumin, a food spice from turmeric, on platelet-activating factor- and arachidonic acid-mediated platelet aggregation through inhibition of thromboxane formation and Ca2+ signaling. Biochem Pharmacol 1999; 58:1167-72. [PMID: 10484074 DOI: 10.1016/s0006-2952(99)00206-3] [Citation(s) in RCA: 145] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Curcumin, a dietary spice from turmeric, is known to be anti-inflammatory, anticarcinogenic, and antithrombotic. Here, we studied the mechanism of the antiplatelet action of curcumin. We show that curcumin inhibited platelet aggregation mediated by the platelet agonists epinephrine (200 microM), ADP (4 microM), platelet-activating factor (PAF; 800 nM), collagen (20 microg/mL), and arachidonic acid (AA: 0.75 mM). Curcumin preferentially inhibited PAF- and AA-induced aggregation (IC50; 25-20 microM), whereas much higher concentrations of curcumin were required to inhibit aggregation induced by other platelet agonists. Pretreatment of platelets with curcumin resulted in inhibition of platelet aggregation induced by calcium ionophore A-23187 (IC50; 100 microM), but curcumin up to 250 microM had no inhibitory effect on aggregation induced by the protein kinase C (PKC) activator phorbol myrsitate acetate (1 microM). Curcumin (100 microM) inhibited the A-23187-induced mobilization of intracellular Ca2+ as determined by using fura-2 acetoxymethyl ester. Curcumin also inhibited the formation of thromboxane A2 (TXA2) by platelets (IC50; 70 microM). These results suggest that the curcumin-mediated preferential inhibition of PAF- and AA-induced platelet aggregation involves inhibitory effects on TXA2 synthesis and Ca2+ signaling, but without the involvement of PKC.
Collapse
Affiliation(s)
- B H Shah
- Department of Physiology and Pharmacology, The Aga Khan University, Karachi, Pakistan.
| | | | | | | | | | | | | |
Collapse
|