Raza Sayyed

ORCID: 0000-0003-0696-8189
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About
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Research Areas
  • Cardiac, Anesthesia and Surgical Outcomes
  • Colorectal Cancer Surgical Treatments
  • COVID-19 and healthcare impacts
  • Trauma and Emergency Care Studies
  • Esophageal Cancer Research and Treatment
  • Esophageal and GI Pathology
  • Sarcoma Diagnosis and Treatment
  • Colorectal and Anal Carcinomas
  • Gastric Cancer Management and Outcomes
  • Colorectal Cancer Screening and Detection
  • Organ Transplantation Techniques and Outcomes
  • Intraperitoneal and Appendiceal Malignancies
  • Pelvic and Acetabular Injuries
  • Ovarian cancer diagnosis and treatment
  • Global Health and Surgery
  • Advances in Oncology and Radiotherapy
  • Enhanced Recovery After Surgery
  • Radiation Dose and Imaging
  • Economic and Financial Impacts of Cancer
  • Pediatric Hepatobiliary Diseases and Treatments
  • Lung Cancer Diagnosis and Treatment
  • Appendicitis Diagnosis and Management
  • Global Cancer Incidence and Screening
  • Abdominal Trauma and Injuries
  • Liver Disease and Transplantation

Royal Marsden Hospital
2021-2025

South University
2024

University Hospital Southampton NHS Foundation Trust
2024

Civil Hospital Karachi
2019-2024

Royal Alexandra Hospital
2024

Southampton General Hospital
2023

University of Southampton
2023

Laboratoire des Sciences de l'Ingénieur, de l'Informatique et de l'Imagerie
2020-2022

Radboud University Nijmegen
2021-2022

Radboud University Medical Center
2022

James Glasbey Tom Abbott Adesoji Ademuyiwa Adewale Adisa Ehab Alameer and 95 more Sattar Alshryda Alexis Arnaud Brittany Bankhead-Kendall Mohamad K. Abou Chaar Daoud Chaudhry Ainhoa Costas‐Chavarri Miguel F Cunha Justine Davies Anant Desai Muhammed Elhadi Marco Fiore J.E.F. Fitzgerald Maria Fourtounas Alexander J. Fowler K Futaba Gaetano Gallo Dhruva Ghosh Rohan R Gujjuri Rebecca Hamilton Parvez Haque Ewen M. Harrison Peter J. Hutchinson Gabriella Hyman Arda Işık Umesh Jayarajah Haytham M.A. Kaafarani Bryar Kadir Ismaïl Lawani Hans Lederhuber Elizabeth Li Markus Löffler Maria Aguilera Lorena Harvinder Mann Janet Martin Dennis Mazingi Craig D McClain Kenneth A McLean John G. Meara Antonio Ramos‐De la Medina Mengistu G Mengesha Ana Minaya María Marta Modolo Rachel Moore Dion Morton Dmitri Nepogodiev Faustin Ntirenganya Francesco Pata Rupert M. Pearse Maria Picciochi Thomas Pinkney Peter Pockney Gabriëlle H. van Ramshorst Toby Richards April Camilla Roslani Sohei Satoi Raza Sayyed Richard Shaw Joana F F Simoes Neil Smart Richard Sullivan Malin Sund Sudha Sundar Stephen Tabiri Elliott H Taylor Mary L Venn Dakshitha Wickramasinghe Naomi Wright Sebastian Bernardo Shu Yip Aneel Bhangu Omar Omar Ewen M. Harrison Aneel Bhangu Kwabena Siaw-Acheampong Ruth Benson Edward Bywater Brett E Dawson Jonathan P Evans Emily Heritage Conor Jones Sivesh K. Kamarajah Chetan Khatri Rachel A Khaw James M Keatley Andrew T. Knight Samuel Lawday Harvinder Mann Ella J Marson S McKay Emily Mills Gianluca Pellino Abhinav Tiwari Isobel M Trout Richard Wilkin Sadi A. Abukhalaf Michel Adamina

The 2015 Lancet Commission on global surgery identified and anaesthesia as indispensable parts of holistic health-care systems. However, COVID-19 exposed the fragility planned surgical services around world, which have also been neglected in pandemic recovery planning. This study aimed to develop validate a novel index support local elective system strengthening address growing backlogs.

10.1016/s0140-6736(22)01846-3 article EN cc-by The Lancet 2022-11-01
Laura Bravo Joana F F Simoes Victor Roth Cardoso Adewale Adisa María Lorena Aguilera and 95 more Alexis Arnaud Bruce Biccard José Andrés Calvache Saisakul Chernbumroong Muhammed Elhadi Dhruva Ghosh Rohan R Gujjuri Ewen M. Harrison Michael Ho Veeru Kasivisvanathan Omar Kouli Hans Lederhuber Elizabeth Li Markus Löffler Arda Işık Hani J. Marcus Janet Martin Kenneth A McLean Ana Minaya‐Bravo María Marta Modolo Dmitri Nepogodiev Gianluca Pellino Maria Picciochi Peter Pockney Gabriëlle H. van Ramshorst Aya Riad Raza Sayyed Malin Sund Georgios V. Gkoutos Aneel Bhangu James C Glasbey Laura Bravo Vasco Cardoso James Glasbey S Chernbumroong Dmitri Nepogodiev JFF Simoes Kenneth A McLean Aneel Bhangu Georgios V. Gkoutos Bryar Kadir Othman Omar Elliot John Revell Michael Bahrami‐Hessari Waheed‐Ul‐Rahman Ahmed Leah Argus Alasdair Ball Aneel Bhangu Edward Bywater Ruth Blanco‐Colino Amanpreet Brar Daoud Chaudhry Brett E Dawson Ignacio Durán Muhammed Elhadi James C Glasbey Rohan R Gujjuri Conor S Jones Ewen M. Harrison Sivesh K. Kamarajah James M Keatley Samuel Lawday Elizabeth Li Harvinder Mann Ella J Marson Kenneth A McLean Dmitri Nepogodiev Lisa Norman Riinu Ots Oumaima Outani Maria Picciochi Irène Santos Caitlin Shaw Elliott H Taylor Isobel M Trout Chris Varghese Mary L Venn William Xu Irida Dajti Arben Gjata Salah Eddine Oussama Kacimi Luis Boccalatte Daniel Cox Peter Pockney Felix Aigner Irmgard Kronberger Elgun Samadov Amer Alderazi Greg Padmore Gabriëlle H. van Ramshorst Ismaïl Lawani Anis Cerovac Samir Delibegović Glauco Baiocchi Gustavo Mendonça Ataíde Gomes

Pulmonary complications are the most common cause of death after surgery. This study aimed to derive and externally validate a novel prognostic model that can be used before elective surgery estimate risk postoperative pulmonary support resource allocation prioritisation during pandemic recovery. Data from an international, prospective cohort were develop for in adult patients (aged ≥18 years) across all operation disease types. The primary outcome measure was at 30 days surgery, which...

10.1016/s2589-7500(24)00065-7 article EN cc-by The Lancet Digital Health 2024-07-01

This study aimed to determine the impact of pulmonary complications on death after surgery both before and during severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic.

10.1093/bjs/znab336 article EN cc-by-nc British journal of surgery 2021-09-10
Ewen A. Griffiths James Halle‐Smith Sivesh K. Kamarajah R.P.T. Evans Dmitri Nepogodiev and 95 more James Hodson J.R. Bundred Ines Gockel James Gossage Arda Işık Joonas H. Kauppila Biniam Kidane Hans Alexander Mahendran Ionuţ Negoi KelechiE Okonta Raza Sayyed Richard van Hillegersberg Ravinder Vohra Bas P. L. Wijnhoven Pritam Singh Ewen A. Griffiths James Halle‐Smith Sivesh K. Kamarajah James Hodson Ewen A. Griffiths Derek Alderson James Bundred R.P.T. Evans James Gossage Ewen A. Griffiths Benjamin J Jefferies Sivesh K. Kamarajah S McKay I. Mohamed Dmitri Nepogodiev K. Siaw- Acheampong Pritam Singh Richard van Hillegersberg Ravinder Vohra Kasun Wanigasooriya Tony Whitehouse Arben Gjata Justin Moreno Flávio Roberto Takeda Biniam Kidane R Guevara Castro Abebe Bekele Tomáš Haruštiak Aristotelis Kechagias Ines Gockel Aleksandras Bagajevas Andrew Kennedy Anna Da Roit J. S. Azagra Hans Alexander Mahendran Lorelí Mejía-Fernández Bas P. L. Wijnhoven Jihène El Kafsi Raza Sayyed Mariana S. Sousa Aline S. Sampaio Ionuţ Negoi R. Blanco Bengt Wallner Paul M. Schneider Po‐Kuei Hsu Arda Işık Sivakumar Gananadha Vanessa Wills Michael Devadas Cuong N. Duong Michael Talbot Michael W. Hii Rebecca Jacobs N.A Andreollo Brian T. Johnston Gail Darling Andrés Isaza-Restrepo Germán Rosero Fernando Arias Dimitrios Raptis Jochen Gaedcke Daniel Reim Jakob R. Izbicki Jan‐Hendrik Egberts Sarunas Dikinis Daniel Willy Kjær M. Larsen Michael Patrick Achiam Juha Saarnio Dimitrios Theodorou Theodore Liakakos Dimitris P. Korkolis William B. Robb Chris Collins Thomas J. Murphy John V. Reynolds Valeria Tonini Marcello Migliore Luigi Bonavina

10.1016/j.ejso.2024.107983 article EN European Journal of Surgical Oncology 2024-03-07

Empty pelvis syndrome (EPS) is a significant source of morbidity following pelvic exenteration (PE), but undefined. EPS outcome reporting and descriptors radicality PE are inconsistent; therefore, the best approaches for prevention unknown. To facilitate future research into EPS, aim this study to define measurable core set, descriptor set written definition EPS. Consensus on strategies mitigate was also explored.

10.1093/bjs/znae042 article EN cc-by British journal of surgery 2024-03-01
Sivesh K. Kamarajah R.P.T. Evans Dmitri Nepogodiev James Hodson James Bundred and 95 more Ines Gockel James Gossage Arda Işık Biniam Kidane Hans Alexander Mahendran Ionuţ Negoi KelechiE Okonta Raza Sayyed Richard van Hillegersberg Ravinder Vohra Bas P. L. Wijnhoven Pritam Singh Ewen A. Griffiths Sivesh K. Kamarajah James Hodson Ewen A. Griffiths Derek Alderson James Bundred R.P.T. Evans James Gossage Ewen A. Griffiths Benjamin J Jefferies Sivesh K. Kamarajah S McKay I. Mohamed Dmitri Nepogodiev K Siaw-Acheampong Pritam Singh Richard van Hillegersberg Ravinder Vohra Kasun Wanigasooriya Tony Whitehouse Arben Gjata J Moreno Flávio Roberto Takeda Biniam Kidane R Guevara Castro Tomáš Haruštiak Abebe Bekele Aristotelis Kechagias Ines Gockel Andrew Kennedy Anna Da Roit Aleksandras Bagajevas J. S. Azagra Hans Alexander Mahendran Lorelí Mejía-Fernández Bas P. L. Wijnhoven Jihène El Kafsi Raza Sayyed M Sousa M Aline S. Sampaio Ionuţ Negoi R. Blanco Bengt Wallner Paul M. Schneider Po‐Kuei Hsu Arda Işık Sivakumar Gananadha Vanessa Wills Michael Devadas C Duong Michael Talbot Michael W. Hii Rebecca Jacobs N.A Andreollo Brian T. Johnston Gail Darling Andrés Isaza-Restrepo Germán Rosero Fernando Arias Dimitrios Raptis Jochen Gaedcke Daniel Reim Jakob R. Izbicki Jan‐Hendrik Egberts Sarunas Dikinis D W Kjaer M. Larsen Michael Patrick Achiam Juha Saarnio Dimitrios Theodorou Theodore Liakakos Dimitris P. Korkolis William B. Robb Chris Collins Thomas J. Murphy John V. Reynolds Valeria Tonini Marcello Migliore Luigi Bonavina Michele Valmasoni Romeo Bardini Jacopo Weindelmayer M Terashima

Textbook outcome has been proposed as a tool for the assessment of oncological surgical care. However, an international in patients undergoing oesophagectomy oesophageal cancer not reported. This study aimed to assess textbook setting.

10.1093/bjs/znac016 article EN British journal of surgery 2022-01-06
James Bundred Sivesh K. Kamarajah K Siaw-Acheampong Dmitri Nepogodiev Benjamin J Jefferies and 95 more Pritam Singh Richard Evans Ewen A. Griffiths Derek Alderson James Gossage S McKay Mohamed Imran Richard van Hillegersberg Ravinder Vohra Kasun Wanigsooriya Tony Whitehouse Aleksandras Bagajevas Abebe Bekele Ruth Blanco‐Colino Anna Da Roit Jihene El Kafsi‐Mawley Arben Gjata Ines Gockel Raul Guevara Castro Tomáš Haruštiak Po‐Kuei Hsu Arda Işık Aristotelis Kechagias Andrew Kennedy Biniam Kidane Hans Alexander Mahendran Loreli Mejia J Moreno Ionuţ Negoi Azagra Juan Santiago Raza Sayyed Paul M. Schneider António Sampaio Soares Mariana S. Sousa Flávio Roberto Takeda Stephanie Vanstraten Bengt Wallner Bas P. L. Wijnhoven Michael Patrick Achiam Tita Agustin Ali Akbar Ahmad Al‐Bahrani Waleed Al‐Khyatt Markus Albertsmeier Essa AlGhunaim Bilal Alkhaffaf William Allum Fernando Am Nelson Adami Andreollo Andrew Arndt Richard Babor José Pedro Barbosa Romeo Bardini Duncan Beardsmore Grant Beban António Bernardes Richard Berrisford Alessandro Bianchi Miloš Bjelović Alex Boddy Ciprian Bolca Luigi Bonavina Gavin Bryce Richard Byrom Rui Casaca David Chan Alexandros Charalabopoulos Edward Cheong Franco Ciotola Elif Çolak Chris Collins S Constantinoiu Rita Costa Marc H. Dahlke Gail Darling Kahled Dawas Giovanni De Manzoni Adel Denewer Michael Devadas Simon Dexter Sarunas Dikinis Dimitrios Theodorou James P. Dolan Cuong Duong Jan‐Hendrik Egberts Y Elgharably Muhammed Elhadi S. Elmahi Fernando Amézquita Farias Enver Fekaj Jesús Fernández Matthew Forshaw José Paulo Freire Daniel French Goran Gačevski

10.1007/s00268-019-05080-1 article EN World Journal of Surgery 2019-07-22
Sivesh K. Kamarajah Dmitri Nepogodiev Abebe Bekele Ivan Cecconello R.P.T. Evans and 95 more Ali Güner James Gossage Tomáš Haruštiak James Hodson Arda Işık Biniam Kidane Alberto M. León-Takahashi Hans Alexander Mahendran Ionuţ Negoi KelechiE Okonta Germán Rosero Raza Sayyed Pritam Singh Flávio Roberto Takeda Richard van Hillegersberg Ravinder Vohra Rebecca White Ewen A. Griffiths Derek Alderson James Bundred R.P.T. Evans James Gossage Ewen A. Griffiths Benjamin J Jefferies Sivesh K. Kamarajah S McKay I. Mohamed Dmitri Nepogodiev K. Siaw- Acheampong Pritam Singh Richard van Hillegersberg Ravinder Vohra Kasun Wanigasooriya Tony Whitehouse Arben Gjata Justin Moreno Flávio Roberto Takeda Biniam Kidane C. Guevara Tomáš Haruštiak Abebe Bekele Aristotelis Kechagias Ines Gockel Andrew Kennedy Anna Da Roit Aleksandras Bagajevas J. S. Azagra Hans Alexander Mahendran Lorelí Mejía-Fernández Bas P. L. Wijnhoven Jihène El Kafsi Raza Sayyed Mariana S. Sousa Aline S. Sampaio Ionuţ Negoi RV Blanco Bengt Wallner Paul M. Schneider Po‐Kuei Hsu Arda Işık Sivakumar Gananadha Vanessa Wills Michael Devadas Cuong N. Duong Michael Talbot Michael W. Hii Rebecca Jacobs N.A Andreollo Brian T. Johnston Gail Darling Andrés Isaza-Restrepo Germán Rosero Fernando Arias Dimitrios Raptis Jochen Gaedcke Daniel Reim Jakob R. Izbicki Jan Egberts Sarunas Dikinis Daniel Willy Kjær M. Larsen Michael Patrick Achiam Juha Saarnio D Theodorou Theodore Liakakos Dimitris P. Korkolis William B. Robb Chris Collins Thomas J. Murphy John V. Reynolds Valeria Tonini Marcello Migliore Luigi Bonavina Michele Valmasoni Romeo Bardini

10.1016/j.ejso.2020.12.006 article EN European Journal of Surgical Oncology 2021-01-01
Sivesh K. Kamarajah R.P.T. Evans Dmitri Nepogodiev James Hodson J.R. Bundred and 95 more Ines Gockel James Gossage Arda Işık Biniam Kidane Hans Alexander Mahendran Ionuţ Negoi KelechiE Okonta Raza Sayyed Richard van Hillegersberg Ravinder Vohra Bas P. L. Wijnhoven Pritam Singh Ewen A. Griffiths Sivesh K. Kamarajah James Hodson Ewen A. Griffiths Derek Alderson James Bundred R.P.T. Evans James Gossage Ewen A. Griffiths Benjamin J Jefferies Sivesh K. Kamarajah S McKay I. Mohamed Dmitri Nepogodiev K Siaw-Acheampong Pritam Singh Richard van Hillegersberg Ravinder Vohra Kasun Wanigasooriya Tony Whitehouse Arben Gjata Justin Moreno Flávio Roberto Takeda Biniam Kidane R Guevara Castro Tomáš Haruštiak Abebe Bekele Aristotelis Kechagias Ines Gockel Andrew Kennedy Anna Da Roit Aleksandras Bagajevas J. S. Azagra Hans Alexander Mahendran Lorelí Mejía-Fernández Bas P. L. Wijnhoven Jihène El Kafsi Raza Sayyed Mariana S. Sousa Aline S. Sampaio Ionuţ Negoi R. Blanco Bengt Wallner Paul M. Schneider Po‐Kuei Hsu Arda Işık Sivakumar Gananadha Vanessa Wills Michael Devadas Cuong N. Duong Michael Talbot Michael W. Hii Rebecca Jacobs N.A Andreollo Brian Johnston Gail Darling Andrés Isaza-Restrepo Germán Rosero Fernando Arias Dimitrios Raptis Jochen Gaedcke Daniel Reim Jakob R. Izbicki Jan Egberts Sarunas Dikinis Daniel Willy Kjær M. Larsen Michael Patrick Achiam Juha Saarnio D Theodorou Theodore Liakakos Dimitris P. Korkolis William B. Robb Chris Collins Thomas J. Murphy John V. Reynolds Valeria Tonini Marcello Migliore Luigi Bonavina Michele Valmasoni Romeo Bardini Jacopo Weindelmayer Masanori Terashima

10.1016/j.jtcvs.2022.01.033 article EN publisher-specific-oa Journal of Thoracic and Cardiovascular Surgery 2022-02-03

This Delphi exercise aimed to gather consensus surrounding risk factors, diagnosis, and management of chyle leaks after esophagectomy develop recommendations for clinical practice.Chyle following malignancy are uncommon. Although they associated with increased morbidity mortality, diagnosis these patients remain controversial a challenge globally.This was modified delivered clinicians across the oesophagogastric anastomosis collaborative. A 5-staged iterative process used on practice,...

10.1097/as9.0000000000000192 article EN cc-by-nc-nd Annals of Surgery Open 2022-08-29

Decision-making in the management of patients with retroperitoneal sarcoma is complex and requires input from a number different specialists. The aim this study was to evaluate levels agreement terms resectability, treatment allocation, organs proposed be resected across multidisciplinary team meetings.The CT scans clinical information 21 anonymized were sent all meetings Great Britain, which asked give an opinion about resected. main outcome inter-centre reliability, quantified using...

10.1093/bjs/znad157 article EN British journal of surgery 2023-05-24

Objective: To identify the frequency of different arterial variants common hepatic artery (CHA) overview identified at abdominal CT angiography (CTA) performed in a large series patients undergoing scans for various reasons.

10.29271/jcpsp.2020.02.187 article EN Journal of College of Physicians And Surgeons Pakistan 2020-02-01

We conducted a retrospective study of patients with fulminant amoebic colitis (FAC) over 20 year period in an urban tertiary care hospital Pakistan. After consideration for inclusion and exclusion criteria 25 cases were identified as FAC the most common presentations being abdominal pain (84%). Nineteen (76%) underwent laparotomy peritonitis evidence of: colonic perforation 10 (40%); faecal eight (32%); bowel gangrene one (4%); intra-abdominal abscess two (8%). Nine (36%) deaths recorded...

10.1177/0049475513491725 article EN Tropical Doctor 2013-04-01

We present our experience of incidence and management aberrant hepatic arterial anatomy encountered during pancreaticoduodenectomy (PD). Patients undergoing PD between December 2014 November 2016 at the Shaukat Khanum Memorial Cancer Hospital, Lahore were included in this short report. Preoperative imaging operative findings these patients reviewed to evaluate classified according Hiatt classification. Sixty-four performed with identified 24 (37.5%) cases. Most common anomaly was replaced...

10.5455/jpma.9783 article EN cc-by Journal of the Pakistan Medical Association 2019-01-01

Microscopically positive resection margins (R1) are associated with poorer outcomes in patients colorectal cancer. However, different definitions of R1 exist. It is unclear to what extent the used everyday clinical practice differ within and between nations. This study sought investigate variations definition cancer importance margin status decision-making.

10.1016/j.ejso.2023.107072 article EN cc-by European Journal of Surgical Oncology 2023-09-11
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