Samuel Stefan

ORCID: 0000-0003-1542-3332
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About
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Research Areas
  • Colorectal Cancer Surgical Treatments
  • Cardiac, Anesthesia and Surgical Outcomes
  • Surgical Simulation and Training
  • Colorectal Cancer Screening and Detection
  • Gastric Cancer Management and Outcomes
  • Colorectal and Anal Carcinomas
  • Anorectal Disease Treatments and Outcomes
  • Anatomy and Medical Technology
  • COVID-19 and healthcare impacts
  • Colorectal Cancer Treatments and Studies
  • Diverticular Disease and Complications
  • Abdominal Surgery and Complications
  • Inflammatory Bowel Disease
  • Radiomics and Machine Learning in Medical Imaging
  • Diversity and Career in Medicine
  • Multiple and Secondary Primary Cancers
  • Intestinal Malrotation and Obstruction Disorders
  • Respiratory Support and Mechanisms
  • Minimally Invasive Surgical Techniques
  • Innovations in Medical Education
  • Stoma care and complications
  • Healthcare professionals’ stress and burnout
  • Hernia repair and management
  • Endometriosis Research and Treatment
  • Healthcare cost, quality, practices

Portsmouth Hospitals NHS Trust
2018-2024

Queen Alexandra Hospital
2015-2024

Institut de Virologie
2021

Anglia Ruskin University
2019

10.20431/2349-0381.1201004 article EN International Journal of Humanities Social Sciences and Education 2025-01-01

Data analytics and artificial intelligence (AI) have been used to predict patient outcomes after colorectal cancer surgery. A prospectively maintained database was used, covering 4336 patients who underwent surgery between 2003 2019. The 47 parameters included demographics, peri- post-operative outcomes, surgical approaches, complications, mortality. were compare the importance of each variable AI prediction models built for length stay (LOS), readmission, Accuracies at least 80% achieved....

10.1007/s12672-022-00472-7 article EN cc-by Discover Oncology 2022-02-28

Complete mesocolic excision (CME) for right colon cancers has traditionally been an open procedure. Surgical adoption of minimal access CME remains limited due to the technical challenges, training gaps and lack level-1 data proven benefits. Currently there is published regarding clinical results with use robotic surgery. Aim To report our experience, techniques, highlighting a oncological midterm outcomes CME.To CME.All patients undergoing standardised technique SMV first approach between...

10.1007/s00464-020-08194-z article EN cc-by Surgical Endoscopy 2021-01-05

Aims Rectal prolapse is a debilitating and unpleasant condition adversely affecting the quality of life. Laparoscopic ventral mesh rectopexy (LVMR) recognized as one treatment options. The aim this study was to evaluate functional outcomes after standardized LVMR. Methods A cohort patients who underwent LVMR from 2011 2015 were contacted asked fill questionnaires about their symptoms before surgery. Three based on measurement Wexner fecal incontinence (WFI), obstructive defecation syndrome...

10.1055/s-0038-1675358 article EN cc-by The Surgery Journal 2018-10-01

Abstract Background We evaluated the short‐term outcomes of robotic colorectal cancer surgery in octogenarian patients, focussing on postoperative morbidity and survival. Methods All patients ≥80 years a prospective database undergoing curative resection were included. Patient demographics, intraoperative findings, oncological recorded. Patients further subdivided into two groups named: old (OG 80–85 years) very (VOG ≥ 86 years). Results Fifty‐eight consecutive included (median age, 83...

10.1002/rcs.2268 article EN International Journal of Medical Robotics and Computer Assisted Surgery 2021-04-30

Background: Locally advanced rectal cancers (10-20%) can present with infiltration into adjacent viscera. R0 resections remain the key factor for better survival. Traditionally these cases have been managed open surgery. There are some limitations of laparoscopic surgery in case, which potentially be overcome by robotic Objectives: To determine feasibility and outcome results multi-visceral resection stage T4 carcinoma. Methods: Consecutive patients having locally carcinoma rectum, who...

10.20944/preprints202403.1219.v1 preprint EN 2024-03-20

Objective: To compare long-term outcomes between laparoscopic and robotic total mesorectal excisions (TMEs) for rectal cancer in a tertiary center. Background: Laparoscopic surgery has comparable to the open approach, with several advantages short-term outcomes. However, it significant technical limitations, which approach aims overcome. Methods: We included patients undergoing TME 2013 2021. The groups were compared after propensity-score matching. primary outcome was 5-year overall...

10.1097/as9.0000000000000404 article EN cc-by-nc-nd Annals of Surgery Open 2024-03-27

BACKGROUND: Structured training programs for robotic colorectal surgery are limited, and there concerns about surgical outcomes operating times. OBJECTIVE: To compare perioperative oncological of total mesorectal excision rectal cancer performed by expert consultants trainees in a modular program. DESIGN: Retrospective cohort study. SETTINGS: Conducted at referral center surgery. PATIENTS: Consecutive cases between May 2013 December 2017 were evaluated retrospectively from prospectively...

10.1097/dcr.0000000000003370 article ES Diseases of the Colon & Rectum 2024-08-12

Complete mesocolic excision (CME) in right-sided colon cancers appears to confer oncological benefits compared conventional colectomy. Identification of the superior mesenteric vein (SMV) remains challenging. We describe novel use intra-operative robotic ultrasound scan (rUSS) obese patients (BMI ≥ 29). All consecutive having CME for cancer between 2014 and 2017 were included this retrospective cohort study. Data recorded on an ethics approved prospective database patient demographics,...

10.1007/s11701-022-01398-6 article EN cc-by Journal of Robotic Surgery 2022-04-15

Crohn's disease increases colorectal cancer risk, with high prevalence of synchronous and metachronous cancers. Current guidelines for in recommend pan-proctocolectomy. The aim this study was to evaluate oncological outcomes a less invasive surgical approach.This retrospective database analysis patients undergoing surgery at selected European US tertiary centres. Outcomes segmental colectomy were compared those extended colectomy, total Primary outcome progression-free survival. Secondary...

10.1093/ecco-jcc/jjab215 article EN Journal of Crohn s and Colitis 2021-11-22

We describe a case report of robotic total pelvic exenteration (TPE) performed for locally advanced rectal cancer at our institution in August 2018. Technical details and comparison with published literature are discussed. A 62-year-old patient low T4N1cM0 extramural vascular invasion (EMVI) underwent an elective clearance by the urology colorectal teams. He received neoadjuvant long-course chemo-radiotherapy to downstage cancer. The primary tumour was T4N1c involvement bladder (trigone...

10.1308/rcsann.2021.0137 article EN Annals of The Royal College of Surgeons of England 2022-03-01

Background. Anastomotic leak is a feared complication in rectal cancer surgery, and proximal diverting stoma to protect the anastomosis used minimize its impact. We evaluated novel technique that uses da Vinci® robotic platform (Intuitive Surgical) reinforce colorectal staple line with sutures, resection assessment of anastomotic perfusion, using our Portsmouth protocol. Methods. During we indocyanine green determine level transection check vascularity circular anastomosis. The distal...

10.1177/15533506221108833 article EN Surgical Innovation 2022-07-19

Pelvic surgery has the potential to leave behind a large raw surface, which can bleed and ooze postoperatively. The adoption of precision surgical approach for rectal cancers led reduction in blood loss. We aimed assess 1) feasibility 2) safety using self-assembling peptide (SAP) haemostatic agent (PuraStat®) after cancer reduce incidence pelvic collections.

10.1016/j.amsu.2021.102553 article EN Annals of Medicine and Surgery 2021-07-09

Abstract Background Bowel endometriosis impacts quality of life. Treatment requires complex surgical procedures with associated morbidity. Precision approach robotic surgery leads to organ preservation. a multidisciplinary management improve patient outcomes. This study evaluates perioperative outcomes bowel undergoing planning and surgery. Methods Consecutive cases (January 2021–December 2022) were evaluated from prospectively maintained database in national accredited centre. Patients...

10.1007/s10151-023-02904-0 article EN cc-by Techniques in Coloproctology 2024-02-08

SUMMARYHaemorrhoids have affected people since ancient time. First documented treatment for haemorrhoids reported from the Egyptian papyrus. Indeed, Ebers’ papyrus dated at 1550 BC, described use of topical astringents to ease haemorrhoidal pain. More recently, Milligan-Morgan haemorrhoidectomy and office procedures such as rubber-band ligation been developed improve patients’ symptoms. However, these treatments accompanying problems, example is known be a profoundly painful operation high...

10.55279/jafmdc.v1i2.57 article EN cc-by-nc Journal of Aziz Fatimah Medical & Dental College 2019-11-19

Siddiqi, Najaf N. F.R.C.S., M.D.; Stefan, Samuel S. M.R.C.S. (Eng); Khan, Jim M.D., Ph.D. Author Information

10.1097/dcr.0000000000001943 article EN Diseases of the Colon & Rectum 2020-12-31
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