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Colonoscopy · Bowel & Colon Cancer Screening

Colonoscopy in Dubai — the examination that looks past the symptom to the cause.

Many of the symptoms that bring patients to a proctology clinic — bleeding, a change in bowel habit, persistent discomfort — can come from the colon itself rather than the anal canal. A colonoscopy examines the entire large bowel directly, under sedation, and can diagnose, biopsy and often treat in the same sitting.

20–40 minute procedure Day case, sedated Diagnostic & therapeutic Colon cancer screening

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What happens during a colonoscopy

You receive sedation, so the examination itself is not felt or remembered
A thin, flexible scope examines the full length of the large bowel from rectum to caecum
Any polyps found are usually removed there and then, using a wire snare
You wake in a recovery area and are typically home within 1–2 hours

The full step-by-step diagram is further down this page.

At a glance

Performed by: Dr Kerim Erdem Ulucay — specialist general surgeon with a certificate in GI endoscopy and 8,000+ endoscopic procedures
Sedation: conscious sedation or short general anaesthesia — nothing is felt or remembered
Duration: 20–40 minutes, procedure time
Discharge: same day, once sedation has worn off
Same session: biopsies and most polyp removals are done there and then
Often combined with: your proctology assessment, in a single visit where clinically appropriate

Medically reviewed by Dr Kerim Erdem Ulucay, Specialist General & Laparoscopic Surgeon (DHA-licensed) Last reviewed: 25 August 2026 Next review due: August 2027 Reading time: 9 minutes

Understand it, then decide

Why it is examined, and what the examination involves

Start on the left if you are wondering whether you need one. Move to the right when you want to know exactly what happens on the day.

Component A · Why It Matters

What a colonoscopy actually examines

A colonoscopy passes a thin, flexible, high-definition camera through the entire large bowel — from the anus to where it joins the small intestine — under sedation. It is the only way to see the full colon lining directly, rather than infer what might be happening from symptoms alone.

This matters specifically in a proctology practice because several proctology symptoms — rectal bleeding, mucus, a change in bowel habit, unexplained abdominal pain, anaemia — can be produced by disease sitting higher up the colon: polyps, diverticular disease, inflammatory bowel disease, or, in a minority, colorectal cancer. A hemorrhoid found on examination does not rule those out; it simply means two things can coexist, and only one of them is visible without a scope.

Colorectal cancer is also substantially preventable, not merely detectable. Almost all of it develops from a benign polyp over several years. Removing that polyp during colonoscopy — before it becomes cancer — is the single most effective screening intervention that exists in this field.

Colonoscopy overview — anatomy and procedure, polyp typing and classification, symptoms and diagnostic reasons, and management and therapeutic options

Anatomy & procedure, polyp typing, diagnostic reasons, and management options at a glance

When a colonoscopy is indicated

Symptom-driven (diagnostic)

Rectal bleeding that is dark, mixed into the stool, or persists after a proctology cause has already been treated
A genuine change in bowel habit — new constipation, new diarrhoea, or narrower stool — lasting more than a few weeks
Unexplained iron-deficiency anaemia or unintentional weight loss
Chronic abdominal pain or a change in bowel pattern suggesting inflammatory or functional bowel disease

Screening & surveillance

Average-risk screening generally from age 45, or earlier with a family history of colorectal cancer or polyps
Surveillance after a previous polyp, at an interval set by what was found last time
Family history of colorectal cancer or a known hereditary bowel-cancer syndrome
Positive stool test (FIT/FOBT) from a screening programme or routine check-up

This is the same reasoning behind "you need a colonoscopy first" before proctology treatment. Where bleeding is dark, mixed into the stool, or accompanied by red-flag features, the colon is examined before — or alongside — treating a hemorrhoid, fissure or fistula, precisely so nothing higher up is missed.

Understanding your colonoscopy

"Do I need a colonoscopy?"

Rectal bleeding for the first time after age 45–50, or any bleeding mixed into the stool
A persistent change in bowel habit lasting more than a few weeks
Unexplained weight loss, iron-deficiency anaemia, or persistent abdominal pain
A family history of colorectal cancer or polyps, or routine screening at the recommended age

If in doubt, ask — a short conversation is enough to decide whether one is warranted.

"Which bleeding needs a scope, not a cream"

Blood mixed through the stool, rather than only on the paper or in the bowl
Dark or black stool, which can indicate bleeding higher in the digestive tract
Bleeding accompanied by a change in bowel habit or unexplained weight loss
Any bleeding that does not settle with simple haemorrhoid treatment within a couple of weeks

These features mean the colon is examined directly rather than assumed to be piles.

Now show me the procedure & preparation

Component B · The Procedure

Colonoscopy, step by step

A thin, flexible endoscope — a high-definition camera on a steerable shaft — is passed through the anus and advanced the full length of the colon to the caecum, then withdrawn slowly while every centimetre of the lining is inspected. The bowel must be completely clean beforehand; this is the single biggest determinant of how thorough and how safe the examination is, which is why the preparation instructions below matter as much as the procedure itself.

Sedation means the procedure itself is not felt, and most patients remember nothing afterwards. If a polyp is found, it is generally removed there and then with a wire snare or forceps passed down the scope — a therapeutic step, not just a diagnostic one. Any area of concern is biopsied for laboratory analysis.

Because Dr Ulucay's practice covers both proctology and general/laparoscopic surgery, a colonoscopy can often be planned in the same sitting as a proctology procedure under one anaesthetic, where clinically appropriate — one admission instead of two.

Colonoscopy technique — endoscope withdrawal with polyp removal using a wire snare

On the day — the four stages

1Arrival
Check-in and consent

You confirm the preparation has been completed, review your medical history and current medications with the team, and sign consent after any final questions are answered.
20–5 minutes
Sedation and positioning

An IV line is placed and sedation given — either conscious sedation or a short general anaesthetic, agreed with you and the anaesthetist beforehand. You are positioned on your left side.
320–40 minutes
The examination

The scope is advanced to the caecum and slowly withdrawn while the lining is inspected in detail. Biopsies are taken and polyps removed as needed, using instruments passed through the scope's working channel.
430–60 minutes
Recovery and discharge

You wake in a recovery area as sedation wears off. Initial findings are discussed before you leave; biopsy results follow within a few working days. You will need someone to drive you home.

Benefits of a well-prepared, well-performed colonoscopy

Direct visual diagnosis

Nothing is inferred. The entire colon lining is seen, photographed and, where relevant, biopsied — the diagnostic gold standard for colonic disease.

Prevents cancer, not just finds it

Removing a polyp during the same session interrupts the years-long process that would otherwise, in a minority of cases, lead to colorectal cancer.

Day case, sedated throughout

Admitted, examined and discharged the same day. Sedation means nothing is felt and little, if anything, is remembered.

Diagnostic and therapeutic together

Biopsy and polyp removal happen in the same sitting as the examination — a second procedure is not usually needed to act on what is found.

Can combine with proctology treatment

When clinically appropriate, colonoscopy and a proctology procedure can be performed under a single anaesthetic — one admission, one recovery.

Performed by an endoscopy-experienced surgeon

Dr Ulucay holds a certificate in gastrointestinal endoscopy and has performed 8,000+ diagnostic and therapeutic endoscopic procedures over more than two decades.

Preparation — steps and technique

A clean colon is what makes a colonoscopy accurate. An inadequately prepared bowel can hide a polyp or mean the examination has to be repeated — so the preparation below is followed exactly, not approximately.

5 days beforeStop iron supplements. Review blood thinners, aspirin, diabetic medication and any other regular medication with the clinic — some are paused, adjusted or timed differently around the procedure.

3 days beforeSwitch to a low-fibre diet: no nuts, seeds, wholegrains, skins or raw vegetables. This reduces residue that a same-day prep alone would struggle to clear.

Day before — daytimeClear liquids only from breakfast onward: water, clear apple or white grape juice, black tea or coffee (no milk), clear broth, plain gelatin. No red or purple liquids. Stay well hydrated throughout.

Day before — eveningFirst dose of the bowel-preparation solution (typically a split-dose PEG-based regimen), taken exactly as instructed — usually a measured volume over 1–2 hours, followed by continued clear fluids.

Procedure day — early morningSecond ("split") dose of the preparation, timed to finish 4–6 hours before your appointment — this timing improves both comfort and the quality of the examination compared with a single evening dose. Nothing to eat or drink (including water) from the time specified by the clinic.

On arrivalA clear, watery, pale-yellow output confirms adequate preparation. Bring your medication list, arrange a driver, and wear comfortable, easily removed clothing.

Follow the exact regimen and timing given at your consultation. Bowel-preparation products, doses and split-timing vary by brand and by patient factors (kidney function, pregnancy, heart failure, prior bowel surgery), so the instructions above are a general outline, not a substitute for your personalised prep sheet — which is provided in writing and talked through before you leave the clinic.

The procedure and preparation, step by step

Inside a colonoscopy, in four steps

Once sedated, the scope is passed gently through the rectum and advanced to the caecum
The bowel lining is inspected in detail as the scope is slowly withdrawn
Any polyps found are removed on the spot using a wire snare and sent for analysis
Biopsies are taken of anything that needs laboratory confirmation

The full illustrated technique diagram is above, in the treatment section.

"How to do the bowel prep properly"

Follow the exact product, dose and split-timing on your personalised prep sheet — not a generic online schedule
Stay close to a bathroom during the active preparation window
Keep drinking clear fluids throughout — dehydration is the most common reason prep feels unbearable
A clear, watery, pale-yellow output is the sign preparation is adequate

Incomplete preparation is the most common reason a colonoscopy has to be repeated.

Book your colonoscopy, with or without a proctology assessment

Whether it is screening, a symptom that needs an answer, or a combined visit alongside hemorrhoid, fistula or fissure treatment, the plan — and the preparation sheet — is written for you before the day.

Book a consultation Ask a question first

Colonoscopy questions

What patients ask before booking

Is a colonoscopy painful?

No. It is performed under conscious sedation or a short general anaesthetic, so nothing is felt during the procedure and most patients remember little or nothing afterwards. Mild bloating or wind-type discomfort for a few hours afterwards, from the air used to inflate the bowel during the examination, is normal.

At what age should I have a screening colonoscopy?

Average-risk screening is generally recommended from around age 45. It is brought forward if you have a first-degree relative with colorectal cancer or polyps, a personal history of inflammatory bowel disease, or a known hereditary bowel-cancer syndrome — this is discussed individually at your consultation.

What happens if a polyp is found?

Most polyps are removed during the same procedure using a wire snare or forceps passed through the scope — no separate operation is usually needed. The tissue is sent for laboratory analysis, and the result determines how soon your next surveillance colonoscopy should be.

How important is the bowel preparation, really?

It is the single biggest factor in how accurate the examination is. An incompletely cleaned colon can hide polyps behind residual stool, and if preparation is inadequate the colonoscopy may need to be repeated on another day. Following the split-dose timing exactly — not just the volume — makes the difference.

Can my colonoscopy be combined with my hemorrhoid, fistula or fissure treatment?

Often, yes. Where it is clinically appropriate and both procedures are indicated, they can be performed under a single anaesthetic in one admission. This is assessed and planned at your consultation, not decided on the day.

How long until I get my results?

Visual findings — normal examination, polyps seen and removed, any areas of concern — are discussed with you before you leave, once sedation has worn off enough to take it in. Formal biopsy/histopathology results typically follow within a few working days.

Do I need to stop my regular medications beforehand?

Some medications — particularly blood thinners, aspirin and certain diabetic medications — need to be paused, adjusted or timed differently around the procedure. This is reviewed individually against your full medication list at consultation; do not stop anything without that review.

Is colonoscopy covered by UAE health insurance?

Diagnostic and screening colonoscopy is covered by most UAE insurance policies, subject to your specific plan and, in most cases, an insurance pre-approval. The clinic submits this on your behalf and gives you a written, itemised quotation before the day.