MBBCh, BSc, MD, FRCS
Mr Williamson's specialities include investigation, diagnosis and treatment of colon and rectal cancer, abdominal pain, bowel symptoms, anal symptoms such as bleeding and pain, haemorrhoids (piles), skin tags and abdominal and groin lumps and hernias. Mr Williamson also specialises in diagnostic and therapeutic endoscopy including colonoscopy, flexible sigmoidoscopy and gastroscopy (OGD).
Mr Williamson studied Medicine at Cardiff University, graduating in 2007 where he undertook surgical training throughout Wales. During this time Mr Williamson undertook a period of research into the molecular biology of colorectal cancer at Swansea University Institute of Life Science where he was awarded his Doctorate in 2015.
Mr Williamson published several research papers based on this and continues to be very engaged in surgical research both in his own hospital and participating in national trials. He is currently the local principle investigator for a national trial of emergency laparoscopic (keyhole) surgery.
On completing surgical training, Mr Williamson was appointed to a prestigious Royal College of Surgeons fellowship in laparoscopic and advanced colorectal cancer surgery in St James University Hospital, Leeds.
Mr Williamson was very pleased to be appointed to his current post in Aneurin Bevan University Health Board in 2020 where he is a busy General and Colorectal Surgeon providing elective and emergency surgical care to patients at the Royal Gwent and Grange University Hospital.
Mr Williamson strongly believes in continuously developing his surgical skills and was recently awarded the ASGBI travelling fellowship to the Royal Prince Alfred Hospital in Sydney Australia where he learned about robotic surgical techniques from world leading experts.
Mr Williamson is passionate about supporting his colleagues and recently was elected to vice chair of the EYCN committee of the Association of Coloproctology of Great Britain and Ireland which provides mentorship and support to new consultants in their first years of practice.
MBBCh, BSc, MD, FRCS
Year of first medical qualification: 2007
ACPGBI, ASGBI, Fellow of the Royal College of Surgeons England
Mr Williamson is a keen and dedicated surgeon and proud to work in South Wales where he grew up, went to school and trained in surgery. He has been married for 11 years and has 2 very active young boys who keep him busy when he is not in work. In Mr Williamson's free time, he enjoys sailing in Cardiff bay and has recently run the London Marathon.
Consultant General and Colorectal Surgeon
Incisional hernia following colorectal cancer surgery according to suture technique: Hughes Abdominal Repair Randomized Trial (HART) August 2022 British Journal of Surgery 109(10):943-950
Mesh migrations may mask malignancy: a patient with adenocarcinoma of the bowel May 2022 The Lancet 399(10339):1976 J Williamson, BM Stephenson
Half-life of surgical truth in general surgery July 2021 Bulletin of The Royal College of Surgeons of England 103(5):254-257 DOI: 10.1308/rcsbull.2021.94 OP James, L Smith, D Locker, L Hopkins, DBT Robinson, T Abdelrahman, J Barry, R Codd, R Egan, R Harries, H Jayamanne, HG Jones, J Pollitt, AGMT Powell, M Stephens, KM Thippeswamy, G Williams, IM Williams, J Williamson and WG Lewis
Delay to elective colorectal cancer surgery and implications on survival: a systematic review and meta‐analysis March 2021 Colorectal Disease 23(10045) Thomas M Whittaker 1, Mohamed E G Abdelrazek 1, Aran J Fitzpatrick 1, Joseph L J Froud 1, Jack R Kelly 1, Jeremy S Williamson 2, Gethin L Williams 2
Rectal cancer lateral pelvic sidewall lymph nodes: a review of controversies and management August 2020 British Journal of Surgery 107(Suppl 3) J. S. Williamson,A. J. Quyn,P. M. Sagar
Elective repair of abdominal aortic aneurysm and the risk of colon ischaemia: systematic review and meta-analysis. Williamson JS, Ambler G, Williams I, Twine C, Williams GL. Eur J Vasc Endovasc Surg. 2018 Jul;56(1):31-39. doi: 10.1016/j.ejvs.2018.03.005
DNA hypermethylation as a predictor of extramural vascular invasion (EMVI) in rectal cancer. Kokelaar R, Jones H, Williamson JS, Williams N, Griffiths AP, Beynon J, Harris D. Cancer biology and therapy 19(1):00-00 (Dec 17). DOI:10.1080/15384047.2017.1416933
Extramural vascular invasion and response to neoadjuvant chemoradiotherapy in rectal cancer: Influence of the CpG island methylator phenotype. Williamson JS, Jones HG, Williams N, Griffiths AP, Jenkins GJS, Beynon J, Harris DA. World Journal Gastrointestinal Oncology (May 2017) 9:5 p209-18. DOI: 10.4251/wjgo.v9.i5.209
Appendiceal neoplasm presenting as intussusception in an adult - Video Vignette. Williamson JS, Swarnkar KJ. Colorectal Disease (Feb 2017, 19(4)). DOI: 10.1111/codi.13637
Inguinal hernias associated with a single strenuous event. Williamson, J.S., Jones, H.G., Radwan, R.R. et al. Hernia (2016) 20: 687. doi:10.1007/s10029-016-1505-7
Comment to: Retrospective observational study on the incidence of incisional hernias after reversal of a temporary diverting ileostomy following rectal carcinoma resection with follow-up CT scans. Hernia (2015) 20:2, Williamson JS, Williams GL, Stephenson BM. DOI: 10.1007/s10029-015-1435-9
Review of the development of DNA methylation as a marker of response to neoadjuvant therapy and outcomes in rectal cancer. Williamson JS, Harris DA, Beynon J, Jenkins GJ. Clin Epigenetics. 2015 Jul 22;7:70. DOI: 10.1186/s13148-015-0111-3.
Outcomes in locally advanced rectal cancer with highly selective preoperative chemoradiotherapy. Williamson JS, Jones HG, Davies M, Evans MD, Hatcher O, Beynon J, Harris DA; Swansea Colorectal Cancer Group. Br J Surg. 2014 Sep;101(10):1290-8. DOI: 10.1002/bjs.9570.