Treatment restrictions due to coronavirus (COVID-19)

As part of our longstanding relationship, we are proud to be dedicating our resources to the NHS at this important time. As a result many of our treatments are currently suspended and we are reviewing all planned procedures and consultations. We are making every effort to talk to impacted patients and apologise for any inconvenience this may cause.

Mr A Shiyam Nizar

Mr A Shiyam Nizar

Consultant General and Colorectal Surgeon

Practising at

Spire St Anthony's Hospital

Spire Clare Park Hospital

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Treatment information

Some of the principal treatments carried out by Mr A Shiyam Nizar at Spire include:

General surgery

Other treatments

  • Laparoscopy investigation and treatment

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Professional profile

I have been a Consultant Colorectal Surgeon at Frimley Park Hospital, Surrey for over three years. I have a specialist interest in minimal access keyhole and robotic bowel cancer surgery, helping continue the excellent work that has been developed in this area at Frimley Park Hospital. I went to medical school at St George's Hospital University of London and completed my higher surgical training programme in London and Surrey, following a period of research in colorectal cancer. In addition to my expertise in bowel cancer, my practice has provided me with great experience managing other benign bowel disorders including, anorectal problems, inflammatory bowel disease, irritable bowel disease, anaemia and pelvic floor disorders.

Specialist interest in: Management of colorectal cancer; Laparoscopic and Robotic bowel cancer surgery; Transanal micro-surgery for polyps and early rectal cancer; Colonoscopy and removal of polyps; Diagnostic endoscopy; Emergency minimally invasive surgery for acute abdominal conditions; Haemorrhoid surgery including injection, banding, traditional haemorrhoidectomy, stapled haemorrhoidectomy, HALO and Rafaelo, Proctology: fissures, fistulae, abscess and sinuses and Prolapse and incontinence.

I am Surgical Lead for the blood transfusion committee at Frimley Park Hospital, Lead for colorectal enhanced recovery and Surgical Lead for Physician Associate students.

Clinical Interests

Bowel disease
Colorectal surgery
Gastrointestinal cancer
Gastrointestinal pathology
Gastrointestinal surgery
Gastrointestinal surgery
General surgery
Hernia repair surgery
Inflammatory bowel disease
Laparoscopic surgery
Minimal access surgery
Motility disorder

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Marketing Information

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We may contact you by email, SMS or phone about your enquiry. If we try to contact you by phone (mobile and/or landline) and you are not available, we may leave you a voicemail message. We may also use your details to contact you about patient surveys we use for improving our service or monitoring outcomes, which are not a form of marketing.

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Qualification and professional memberships

MBBS / St George's University of London / 2000
Medical Degree

Professional memberships

Royal College of Surgeons of England

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Current NHS posts

Frimley Park NHS Foundation Trust

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Research and Publication


Imprint cytology- a viable alternative to OSNA in Sentinel Node Analysis of axillary lymph node in Breast Cancer? Nizar S, Shambayati B, Higgs J, Shrotria S. Submitted to The Journal of Cytology. June 2015

Does Closure of the mesenteric defect during ante-colic bypass reduce the incidence of internal herniation. ´┐╝Sanmugalingam N, Nizar S, Vasilikostas G, Wan A. Int J Surg. Jan 2013

´┐╝ Minimally Invasive vs Open Oesophagectomy for patients with oesophageal cancer: a multicenter, open label randomized controlled trial. Khan O, Nizar S, Vasilikostas G, Wan A.J Thoracic Dis 27 Oct 2012

T-regulatory cells; the evolution of immunotherapy. S Nizar, C Galustian, D Kumar, A Dalgleish. Biochemica et Biophysica Acta (Elsevier). Feb 23rd 2010.

Gemcitabine and Lenalidomide combination in a patient with metastatic cancer. WM Liu, S Nizar, AG Dalgleish. Med Oncol. May 12 2009

The modulation of T-regulatory cells: the future of cancer immunotherapy? S Nizar, D Kumar, AG Dalgleish. Br J Cancer. 2009 Jun 2;100(11):1697-703

Spoon Handle Aspiration. CL Dickinson, S Nizar, AC Wan, F Lee. Submitted to and Accepted by BMJ Case Reports. Published November 2008

The NHS bowel cancer screening programme - the evolution and the present. NJ West, S Nizar, RJ Leicester. Gastroenterology Today 2006;16(3)

Abdominal Compartment Syndrome: The Early Response to Laparostomy. S Nizar, Y Abdul-aal , S Wahed, T Rahman, K Marcus Reddy. Acta Clinica Belgica, -4-

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Personal Profile

Having played a lot of cricket and rugby, I enjoy following both sports avidly.

I have a love of music, having played the cello for my Medical School orchestra. Whenever possible I enjoy visiting the Royal Opera House with my wife to watch operas. I also enjoy listening to all kinds of music, especially when I operate. I have a particular affinity to rock music. I especially enjoy listening to music from groups such as Pink Floyd and Genesis, having seen them in concert.

Most of my weekends are spent helping my children with their activities. However, we manage to make time to work on our allotment as a family.

I also enjoy travelling around the world.

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Private contact details

Telephone Insured: 0208 335 4678/9; Self-Pay: 0208 335 4646