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Anorectal symptoms and complaints are common and may be caused by a wide spectrum of conditions that affect the colon, rectum and anus. Although most conditions are benign and may be successfully treated in the outpatient clinics, a high index of suspicion for colorectal cancer should be maintained and all patients should be appropriately investigated.


We are consulted by patients with anorectal and colonic symptoms such us abdominal pain, anal pain, anal bleeding, rectal bleeding, rectal prolapse, itching around the anus, haemorroids, piles, constipation, diarrhoea, faecal incontinence.


We offer minimally invasive or laparoscopic surgery for conditions such as colorectal cancer, diverticular disease, diverticulitis, Crohn's disease, ulcerative colitis, and anal fistulae and anal fissures.


For patients with a family history of colon and rectal cancer or polyps, The London ColoRectal Practice offers a comprehensive bowel screening program.

Summary of conditions to consults us about:

Abdominal pain

Anal pain

Anal or rectal bleeding

Pus discharge from and around anus

Rectal prolapse

Itching around the anus

Presence of swelling or lumps in or around anus

Haemorrhoids or piles

Passage of mucus per rectum

Constipation or straining during defecation

Frequency of stool or diarrhoea

Faecal incontinence or soiling

We have specialist and general interest in:


Colon & rectal cancer (Bowel cancer) treatment

Bowel cancer screening

Diverticular disease

Anal cancer

Inflammatory bowel disease (Ulcerative colitis / Crohn's disease)

Diverticular disease


Anal fistula

Anal fissures

Pilonidal disease

Abdominal wall hernia



​Bowel Cancer (Colorectal cancer) and Screening

  • Bowel cancer is the second leading cause of cancer death in the United Kingdom, killing approximately 16,000 people each year.

  • Around 41,000 people are diagnosed with this disease each year in the United Kingdom, making it the fourth most common cancer.

  • Most cases of bowel cancer (95%) occur in people over the age of 50, however, it can occur at any age.

  • For men, the lifetime risk of developing bowel cancer is 1 in 14 and for women, it is 1 in 19.

If you have risk factors for colon cancer or are concerned about symptoms suggestive of bowel cancer, we are more than happy to provide you with all the options available to you for screening or diagnostic testing. These include FIT (Faecal Immunochemical Test) stool test, colonoscopy or CT 'virtual' colonoscopy.

Symptoms suggestive of colorectal cancer.


  • A change in bowel habits, such as diarrhoea, constipation or more-frequent bowel movements

  • Dark maroon or bright red blood in stool

  • Narrow stool

  • A feeling that your bowel doesn't empty completely

  • Abdominal pain

  • Unexplained weight loss

  • Weakness or fatigue

Please contact us if you would like more information or investigations.

Simple to Complex Abdominal Wall Hernia Repair

Whether you have a simple abdominal wall hernia or a complex abdominal wall hernia, usually greater than 10 cm in size, we have the expertise to repair these. If appropriate, we can repair small hernias with minimally invasive surgery, allowing a quicker repair to occur. However, complex abdominal wall defects, especially those following GI surgery and incisional hernias, may require anterior or posterior component separations (ACS/PCS) for repair. 

Every patient is unique, so Mr Nunoo-Mensah will offer you care and treatment tailored to meet your needs. If a wider multidisciplinary team is required to provide the best outcome, he works with dedicated plastic surgeons at Cleveland Clinic London, including Edmund Fitzgerald O'Connor, who specializes in plastic surgery and reconstructive surgery and may also recommend an abdomnoplasty to ensure an excellent outcome tailored to individual patient needs.



There is currently no cure for endometriosis. Endometriosis can be treated in several ways in order to reduce symptoms, improve quality of life, and improve fertility. The most common treatments for endometriosis that do not require surgery are hormone therapy and pain management. However, in the event surgery is required, it may involve excision (removal of the endometrial tissue using cutting) or ablation (destroying of the endometriosis cells using radiofrequency energy).

Cleveland Clinic London is proud to host some of the leading gynaecological surgeons in the country, including Ms Elizabeth Ball, with whom Mr Nunoo-Mensah collaborates closely to treat pelvic endometriosis that may involve the bowels. Contact us if you think you may have endometriosis or if you have a working diagnosis of simple or complicated endometriosis and would like to discuss your options.


State of The Art Procedures we perform:

It is important to consider short recovery time, a quick return to normal activity, Llow risk of complications and maintenance of functional outcomes when undergoing surgery for haemorrhoids, fistulas, or pilonaidal disease. In order to achieve the best possible result, we are able to discuss with you minimally invasive procedures we perform. Below are some examples of these options:

  • Laser surgery for anal fistula and haemorrhoids

  • Other anal fistula surgery - including sphincter preservation techniques such as Permacol Paste Injection and BioLIFT procedures

  • Other haemorrhoidal surgery including Haemorrhoid artery ligation surgery (HALS) and stapled haemorrhoidectomy (PPH) procedures

A wide range of colorectal diseases that previously required open surgery can now be diagnosed and treated with minimally invasive surgery at the London Colorectal Surgery . In addition to less postoperative pain and fewer major complications following surgery, minimally invasive surgery results in shorter hospital stays, faster recovery times, less scarring, less stress on the immune system, a smaller incision, and reduced operating time and costs for some procedures. We are y proud to offer:


  • Laparoscopic (keyhole/minimal invasive) surgery

  • Advanced laparoscopic surgical procedures including SILS – single incision laparoscopic surgery

  • Trans endoscopic microsurgery for small rectal tumours

  • Endoscopic mucosal resection of colorectal polyp


For investigating constipation and faecal incontinence we also offer:

  • Anorectal physiology (manometry)

  • 3D endorectal ultrasound tests etc for investigating constipation and faecal incontinence

Other services:

  • Colonoscopy & gastroscopy

  • Bowel cancer screening

  • Robotic Colorectal Surgery (Very soon!)

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