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The Colorectal Department at Sevenoaks Medical Centre is dedicated to diagnosing a range of conditions, which can affect the colon, rectum, anus and pelvic floor, such as Crohn’s Disease or Colon Cancer.

We provide a range of diagnostic and minor treatments on site with more complex treatments completed via other HCA Healthcare facilities following diagnosis.

Colorectal procedures at Sevenoaks Medical Centre

Flexible sigmoidoscopy

One of the main screening tests for colorectal cancer, a flexible sigmoidoscopy uses a fibre-optic camera to examine the rectum, sigmoid and left colon. Often performed without sedation, this procedure is also used to look for bleeding or noncancerous growths (polyps).


A colonoscopy is performed to examine the lining of the rectum and help in the diagnosis of colorectal problems. The procedure involves a long, flexible tube (the colonoscope) being inserted into the rectum and moved through the colon. This allows the physician to not only perform examinations but also perform biopsies and remove noncancerous growths (polyps).


Proctology a medical focus, dealing with the diagnosis and treatment of conditions involving the anus, colon and rectum.

Banding of haemorrhoids

An outpatient procedure where a surgeon takes hold of a haemorrhoid using forceps or a suction device then places a rubber band around its base. This cuts off blood supply causing the haemorrhoid to wither and drop off after a few days.

Inflammatory bowel disease

Inflammatory bowel disease is a chronic condition, were the lining of the digestive tract becomes inflamed and covered with ulcers. Two common types of inflammatory bowel disease are Crohn's Disease and Ulcerative Colitis.


At Sevenoaks Medical Centre we also provide access to more complex colorectal procedures, which are carried out via London Bridge Hospital. These include:

Upper GI endoscopy

This examination involves passing a small, fibreoptic tube (the endoscope) into the stomach via the mouth. This helps a doctor to analyse the lining of the oesophagus (gullet), stomach and duodenum (the first section of the small intestine). If a tissue sample is needed, it will be removed painlessly through the endoscope, using miniature forceps before being sent for analysis.

Stapled haemorrhoidectomy

This is a new technique for the treatment of haemorrhoids. This procedure removes the excess lining of the bowel. This raises the haemorrhoidal tissue back to its original position. This causes the blood supply to the haemorrhoids to reduce and leads to them shrinking. A relatively painless procedure, this can be performed as a day case in most instances.

Diathermy haemorrhoidectomy

This is the surgical removal of haemorrhoids, where a high frequency electric current is used to produce heat to excise anal cushions. This is usually performed as a day case procedure in most instances.

Pilonidal sinus surgery for primary and recurrent disease

This procedure treats ingrowing hair follicles, which occur at the base of the spine. Hairs grow inwards through tiny holes in the skin (sinuses), germs on the hairs can then cause pain, swelling and discharge. There are a number of surgical techniques for their removal including excision, Bascom's procedure and Limberg flaps.

Anal fissures

An anal fissure is a small tear in the skin, just inside the anus, usually towards the back. Treatments include the use of GTN (a drug used to relax the internal anal sphincter) or a surgical procedure called a sphincterotomy, which involves cutting out part of the internal sphincter to help relieve tension.

Similar results to the sphincterotomy can be reached via non-surgical means, such as diltiazem for a chemical sphincterotomy or botulinum toxin (BOTOX®). A Botox fissurectomy usually lasts for three months or until nerve endings regenerate. This three-month period can allow acute fissures to heal – if this doesn’t happen a surgical sphincterotomy may be recommended.

Perianal abscess and anal fistula surgery

A perianal abscess is a gathering of pus that forms next to the anus, leading to swelling and pain. An anal fistula is a narrow channel which runs from the skin near the anus to further up the anus, usually occurring following an abscess in the area. Surgery treatment can involve draining the sepsis, the laying open of the fistula, seton insertion and rectal advancement flaps treatment.

Surgery for Crohn's Disease

Crohn’s Disease occurs along the digestive tract and can spread deep into the bowel wall. While surgery is able to relieve the symptoms of Crohn’s Disease, it cannot fully cure it. Surgery can involve the resection of diseased segments of Crohn's and strictureplasty of short strictures to preserve bowel length. This can be accomplished laproscopically, utilising minimally invasive surgery and micro-video cameras.

Pouch surgery for ulcerative colitis

Ulcerative colitis usually afflicts the top layer of the large intestine (the colon) and rectum. Pouch surgery takes the very end of the small intestine (the ileum) and creates a pouch that once connected to the anus allows waste to leave the body.

Colorectal cancer surgery

Although usually harmless, if non-cancerous growths (polyps) continue to grow, they run a risk of becoming a cancerous tumour. If this occurs, colorectal surgery may be necessary to treat the subsequent colon and rectal cancer.

Primary colorectal cancer surgery

These surgical procedures include all colonic and rectal resections; this includes low anterior resection of the rectum (tumour removal without affecting the anus), and abdominoperineal excision (where the rectum and anus are both removed) with myocutaneous flap repair of the perineum.

Recurrent rectal cancer surgery

This surgery can involve multivisceral resection (surgery which involves numerous organs). This can include total pelvic exenteration, this is the removal of the bladder, urethra, rectum, anus as well as the supporting muscles and ligaments, together with the reproductive organs. Other surgeries include abdominosacral resection, this procedure treats mid rectal cancer while also preserving the function of the anal sphincter.

Rectal prolapse surgery

When the lining of the rectum collapses through the anal opening, surgery can be required in order to effectively repair the prolapse. The surgical team at Sevenoaks Medical Centre can provide perineal and abdominal surgical repair in the event of a full thickness rectal prolapse.

Rectocele repair

A rectocele repair procedure entails repairing the supportive tissues between the vagina and rectum in order to treat a prolapse of the rectum through the vaginal wall. In some cases, this surgery can be performed laparoscopically, this involves minimally invasive surgery and micro-video cameras.

Anal sphincter repair

Damage to the anal sphincter is a relatively common and occurs in up to a third of women during their first vaginal childbirth. Conditions, which can arise as a result, may include faecal incontinence. Surgical procedures can fix the damage to the anal sphincter, restoring normal function.

Diverticular Resection

This condition stems from the herniation of mucosa through the thickened colonic muscle; the number of diverticula can vary from one to many hundreds. Diverticular resection is the procedure utilised to treat complicated diverticular diseases, such as colovaginal (where stools are passed via the vagina) and colovesical fistulae (where the urinary bladder and the bowel become connected).

Why use the Colorectal Department at Sevenoaks Medical Centre?

  • Colorectal conditions can be uncomfortable and distressing. Minimising this through faster diagnosis and quicker treatment is something we strive for. This is why we aim for same and next day appointments, in order to treat these conditions quickly.
  • Sevenoaks Medical Centre makes of the latest technologies for treatment and diagnostics, meaning less invasive diagnostics, more accurate diagnostics and faster treatment.
  • We work alongside top consultants from London’s leading teaching hospitals. These experts oversee treatment and ensure the highest quality of care for our patients.
  • Patient care is specifically tailored to each patient’s specific needs in order to maximise an effective recovery and help reach the most successful outcomes in terms of treatment and rehabilitation.

For more information about the Colorectal Department, or to arrange an appointment call 01732 775 800, or use our online booking form.