Mr Trif Papettas FRCS – Private Hernia & Bowel Surgeon
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Gastro & Colorectal Symptoms, Diagnoses, Tests and the Latest Guidance — Warwickshire & Coventry

Everything in one place: what your symptoms might mean, how conditions are diagnosed, which tests are used, what's changed recently in national guidance, and where the information on this page actually comes from. Written for patients across Warwickshire, Leamington Spa and Coventry.

Reviewed by Mr Trif Papettas FRCS · Warwickshire & Coventry · Last updated 2026-09-20
50–74NHS screening age range
2-weekurgent NICE referral pathway
2025latest guideline update
6authoritative sources cited

What's on this page

This guide is written and clinically reviewed by Mr Trif Papettas FRCS, a consultant colorectal and general surgeon in Warwickshire who holds JAG accreditation in both colonoscopy and gastroscopy. He sees patients at Nuffield Health Warwickshire Hospital in Leamington Spa and at The Grafton Suite in Stratford-upon-Avon, both within easy reach of Warwick, Kenilworth, Coventry, Rugby and Nuneaton — see where appointments take place. Every clinical fact below links to its NHS, NICE, or specialist-society source.

1Choosing who to see

A gastroenterologist trains through general medicine before subspecialising in the digestive system; a colorectal surgeon trains through general surgery before subspecialising in the colon, rectum and anus. Both can diagnose bowel conditions, and both can perform endoscopy if separately accredited to do so. The practical difference is what happens if treatment turns out to be surgical: a gastroenterologist refers you on, while a colorectal surgeon who also holds endoscopy accreditation — as Mr Papettas does — can take you from consultation, through diagnostic colonoscopy, to treatment, under one consultant throughout.

We've written a full comparison, with a side-by-side table of training and scope: Colorectal Surgeon or Gastroenterologist? Which Should You See? →

2Diagnoses & conditions

Bowel and digestive symptoms overlap a great deal between conditions — which is exactly why the right test, not symptom-matching against a list, is what actually distinguishes them. The conditions seen most often in a colorectal clinic include irritable bowel syndrome (IBS), inflammatory bowel disease (Crohn's disease and ulcerative colitis), diverticular disease, haemorrhoids and anal fissure, gastro-oesophageal reflux (GORD), colorectal polyps, and colorectal cancer.

Simplified schematic of the large bowel, showing where common conditions occur Caecum Ascending colon Transverse colon Descending colon Sigmoid colon Rectum

Simplified schematic of the large bowel — not a diagnostic image. Conditions are often described by where they sit along this path.

For the full directory of 22 conditions with symptoms, diagnosis and treatment for each, see the existing conditions hub: Bowel & GI Conditions →. If you'd rather start from a symptom than a diagnosis, the single-consultant symptom pathway is explained on Do You Have Bowel Symptoms? →, which links out to ten dedicated guides — abdominal pain, bloating, change in bowel habit, rectal bleeding, reflux & indigestion, unexplained weight loss, IBS or IBD, diverticular disease, swallowing difficulty, and iron-deficiency anaemia. Two areas worth a closer look that aren't covered in depth elsewhere on the site are below: polyps, and what actually happens if a cancer diagnosis is confirmed.

Diagnoses · deep dive

Colorectal polyps: why the small ones matter too

A polyp is a small growth on the bowel lining — common, usually found incidentally at colonoscopy, and in the large majority of cases entirely benign. Some types (adenomas, in particular) can slowly accumulate genetic changes over years and turn into cancer — the "adenoma-to-carcinoma" pathway that underlies most colorectal cancer. This is why removing them at colonoscopy, using a wire snare or forceps passed down the scope, is considered genuinely preventive, not just diagnostic.

Larger or more complex polyps occasionally need specialist referral for advanced endoscopic removal, or rarely surgery — see BSG/ACPGBI guidance on large non-pedunculated colorectal polyps. After any polyp is removed, follow-up colonoscopy is recommended at an interval set by how many polyps were found, their size, and their type under the microscope, following the BSG/ACPGBI/PHE post-polypectomy surveillance guidelines — not a one-size-fits-all schedule. For how that plays out in practice, see Colonoscopy Surveillance After Polyps →

4Tests & investigations

Colonoscopy, gastroscopy, flexible sigmoidoscopy, CT colonography, the FIT test, and relevant blood tests are each explained — what they involve and when they're used — on the existing tests page: GI Diagnostic Tests Explained →. There's also a dedicated guide for most individual tests, if you already know which one you're having or want more detail than the overview gives: Do I Need a Colonoscopy?, Do I Need a Gastroscopy?, Flexible Sigmoidoscopy or Colonoscopy?, CT Colonography ("Virtual Colonoscopy"), Capsule Endoscopy, Abdominal Ultrasound, CT Scan of the Abdomen, MRI of the Pelvis, Blood Tests for Gut Symptoms, Faecal Calprotectin, H. Pylori Testing, Abnormal Liver Tests, and Anorectal Physiology & Pelvic Floor Tests. Two areas that the overview page covers only briefly are expanded below: what bowel preparation and recovery for a colonoscopy actually involve, and how the national screening programme (as opposed to a diagnostic FIT test) works.

Tests · deep dive

Colonoscopy: bowel preparation and recovery

Getting the bowel properly empty is essential for a clear, safe examination. Preparation typically involves stopping certain medications a few days beforehand, following a low-residue or clear-fluid diet for a day or two before the procedure, and taking a prescribed bowel-cleansing solution the day before — you'll be given specific written instructions, and following them closely makes a real difference to how thorough and comfortable the procedure is.

Afterwards, if you've had sedation, you'll rest for around an hour before going home with an escort, and should avoid driving, operating machinery, drinking alcohol, or making important decisions for the rest of the day. Mild bleeding for 12–24 hours is possible if a polyp was removed; serious complications such as perforation are rare. Biopsy results typically take several weeks to come back from the laboratory, even though visual findings are usually discussed with you the same day.

For sedation options, procedure length, and how quickly a private colonoscopy can be arranged, see: How Quickly Can I Get a Private Colonoscopy in Warwickshire? →, and, on cost and paying for it yourself, Self-Pay Colonoscopy →. On the quality standards behind the procedure itself: What Is JAG Accreditation? →

6Screening & the FIT test

It's worth separating two different situations that both involve the FIT test. If you already have symptoms, a positive FIT test helps your GP decide how urgently you need a colonoscopy — see FIT Test Explained → and A Positive FIT Test: What Happens Next? → for what a result means in that context, and Bowel Cancer Specialist Warwickshire → for the wider assessment pathway. If you have no symptoms, the NHS national screening programme uses the same test to catch bowel cancer, or the polyps that can become it, before any symptoms appear at all — see also Screening vs Diagnostic Colonoscopy →.

Everyone registered with a GP in England aged 50 to 74 is sent a home FIT kit automatically every two years; people 75 and over can request one via the programme helpline. This age threshold was lowered in stages from 60, with the extension down to age 50 completing in 2025 — adding roughly 850,000 more people a year to the eligible population (Cancer Research UK, Jan 2025). The test itself is a stool sample collected at home and posted to the lab, checking for blood invisible to the naked eye. Source: NHS — Bowel cancer screening.

Red-flag symptoms: the NICE referral criteria

NICE guideline NG12 (Suspected cancer: recognition and referral, published 2015, updated October 2023) sets the specific symptom-and-age combinations UK GPs use to decide who needs an urgent ("two-week-wait") referral:

AgeSymptom(s)
40 and overUnexplained weight loss with abdominal pain
50 and overUnexplained rectal bleeding
60 and overIron-deficiency anaemia, or a change in bowel habit
Any ageA rectal or abdominal mass found on examination
Under 50Rectal bleeding together with abdominal pain, a change in bowel habit, weight loss, or iron-deficiency anaemia
Any ageA positive FIT test (occult blood found in stool)

Meeting one of these does not mean you have cancer — most people referred this way don't. They're a sensitivity threshold, not a diagnosis. Source: NICE guideline NG12, via GPnotebook summary (full guideline: nice.org.uk/guidance/ng12). For the clinical picture behind specific symptoms, see IBS or Something More Serious? → and Rectal Bleeding: Haemorrhoids or Something More Serious? →

8If it is cancer: the treatment pathway

Most colorectal cancer develops slowly from a polyp over years, which is why polyp removal matters as prevention (see above). If a cancer is confirmed at colonoscopy biopsy, further scans — typically CT of the chest, abdomen and pelvis, and sometimes MRI of the rectum — stage the disease: establishing its size, local spread, and whether it has spread elsewhere. A multidisciplinary team (MDT) of surgeons, oncologists, radiologists and specialist nurses then plans treatment based on that staging:

Every case is different, and the specific plan is set by the MDT for your own diagnosis and staging — this section describes the general pathway, not a substitute for that discussion.

9Latest guidance

2025 — BSG inflammatory bowel disease surveillance guideline

The British Society of Gastroenterology published a full replacement of its 2010 IBD colorectal surveillance guideline, moving from a one-size-fits-all schedule to individualised risk stratification — colonoscopy intervals of 1–3 years set by individual risk, using high-definition colonoscopy with chromoendoscopy for detection. Source: BSG, 2025.

October 2023 — NICE NG12 update

The national suspected-cancer referral guideline (see red-flag table above) was last updated in October 2023 and remains current. Source: NICE NG12.

2025 — NHS bowel screening extended to age 50

NHS England completed the phased extension of national bowel cancer screening down to age 50 (previously 60) — see the screening section above. Source: Cancer Research UK, Jan 2025.

Ongoing — BSG/ACPGBI polyp management guidance

Joint guidance on large non-pedunculated colorectal polyps and post-polypectomy surveillance — see the polyps section above. Source: ACPGBI.

10Trusted sources

Every clinical claim on this page links to one of the organisations below — go direct to the source if you want to check or dig further.

11Every guide on this site, by topic

This page is the overview. For conditions with their own dedicated guide, here's the full library, grouped by topic.

Piles, fissure & proctology

Gallbladder & weight-loss drugs

Bowel cancer

About Mr Papettas

Looking for hernia guidance instead? See the full hernia guide library →

Common questions

Should I see a GP, a gastroenterologist, or a colorectal surgeon?
Start with your GP for any new or persistent symptom — they can arrange first-line tests and refer you on. For a bowel-specific problem where surgery might eventually be needed, a colorectal surgeon who also holds endoscopy accreditation can take you from diagnosis straight through to treatment under one consultant, rather than passing you between two specialists.
Which symptoms should never be ignored?
Rectal bleeding, a persistent change in bowel habit, unexplained weight loss, a new abdominal or rectal lump, or unexplained iron-deficiency anaemia all warrant assessment — age combined with the specific symptom is what determines how urgently, under NICE guidance. See the red-flag criteria table on this page.
Does a positive FIT test or a polyp mean I have cancer?
No, in both cases. Most positive FIT results and most polyps are not cancer — see the screening and polyps sections on this page for what each actually means.
Who is eligible for NHS bowel cancer screening?
Everyone aged 50 to 74 is sent a home FIT test kit automatically every two years; people 75 and over can request one. This age threshold was progressively lowered from 60, completing the extension to age 50 in 2025.
Where can I see a private colorectal specialist in Warwickshire or Coventry?
Mr Papettas consults and performs endoscopy at Nuffield Health Warwickshire Hospital in Leamington Spa and at The Grafton Suite in Stratford-upon-Avon. Both sites are within easy reach of Coventry, Warwick, Kenilworth, Rugby, Nuneaton, Solihull and the wider Warwickshire area, with free on-site parking and appointments usually available within the week. Call 01926 935121.
Is this page a substitute for seeing a doctor?
No — it's written to help you understand your options and prepare for a consultation, not to diagnose you. If you're worried about a symptom, contact your GP or the clinic directly.

Where appointments take place: Warwickshire & Coventry

Consultations, colonoscopy and gastroscopy take place at two Warwickshire sites, both chosen to be straightforward to reach from Coventry and the surrounding towns. Free on-site parking is available at each, and appointments are usually offered within the week.

Patients travel to these clinics from Coventry, Leamington Spa, Warwick, Kenilworth, Stratford-upon-Avon, Rugby, Nuneaton, Bedworth, Solihull, Banbury, Redditch and across Warwickshire and the wider West Midlands. Self-pay and all major insurers accepted (Bupa, AXA Health, Aviva, Vitality, WPA).

Speak to Mr Papettas

One consultant surgeon, JAG-accredited in colonoscopy and gastroscopy, seeing you from first symptom through to diagnosis and treatment — at clinics in Leamington Spa and Stratford-upon-Avon, serving Warwickshire and Coventry.

☎ Call 01926 935121