Persistent acid reflux, difficulty swallowing, unexplained abdominal discomfort or changes in bowel habits can sometimes indicate an underlying digestive condition that requires further evaluation. While these symptoms may occasionally be caused by minor issues, recurring or persistent symptoms should not be ignored. Endoscopy is a procedure used to examine the digestive tract, helping identify the cause of symptoms and guide appropriate treatment where needed.
Orchard 
Farrer Park 
Dr Chew Min Hoe
Senior Consultant, General & Colorectal Surgeon
MBBS (Singapore), MRCS (Edinburgh), MMed (Surgery), FRCS (Edinburgh)
Meet Our Endoscopy Specialist in Singapore
Dr Chew Min Hoe
Senior Consultant, General & Colorectal Surgeon
- MBBS (Singapore)
- MRCS (Edinburgh)
- MMed (Surgery)
- FRCS (Edinburgh)
Dr Chew Min Hoe is a senior consultant general and colorectal surgeon with a strong clinical focus on digestive and colorectal health. He has extensive experience performing gastroscopy and colonoscopy for the early detection, diagnosis and monitoring of gastrointestinal conditions, including colorectal polyps, colorectal cancer and disorders affecting the upper digestive tract.
By combining specialist expertise with a thorough and patient-centred approach, Dr Chew helps patients better understand their symptoms, interpret endoscopy findings and make informed decisions about their ongoing care.
What Is Endoscopy?
Endoscopy is a minimally invasive procedure that allows a doctor to examine the digestive tract using a thin, flexible instrument known as an endoscope. Equipped with a high-definition camera and light source, the endoscope provides real-time images of the digestive tract, helping to identify abnormalities that may not be visible through other tests.
What Is an Endoscopy Used For?
By allowing direct visualisation of the digestive tract, endoscopy can help identify the cause of symptoms, detect abnormalities and guide appropriate management.
- Investigate Digestive Symptoms: It helps determine the cause of symptoms such as acid reflux, abdominal pain, difficulty swallowing, nausea, vomiting and gastrointestinal bleeding.
- Diagnose Digestive Conditions: Endoscopy can identify ulcers, inflammation, polyps, tumours and other abnormalities affecting the digestive tract.
- Monitor Existing Conditions: Patients with conditions such as Barrett's oesophagus, inflammatory bowel disease or previous gastrointestinal polyps may require periodic endoscopic assessment.
- Perform Minimally Invasive Treatment: Certain procedures, including polyp removal, biopsy collection, bleeding control and stricture dilation, can be performed during the same examination.
Persistent digestive symptoms deserve attention. Experiencing acid reflux, blood in your stool or persistent abdominal pain? Speak with Dr Chew Min Hoe to see if an endoscopy is right for you.
Types of Endoscopy for Digestive Health
Different types of endoscopy are used to examine specific parts of the digestive tract. The most suitable procedure depends on your symptoms, medical history and the area that requires further assessment.
Gastroscopy (Upper Endoscopy)
A gastroscopy examines the upper digestive tract, including the oesophagus, stomach and duodenum. It is commonly used to investigate symptoms such as acid reflux, difficulty swallowing and upper abdominal pain, as well as diagnose conditions including gastritis, stomach ulcers and upper gastrointestinal bleeding.Colonoscopy
A colonoscopy examines the colon and rectum to screen for colorectal cancer and investigate symptoms such as rectal bleeding, changes in bowel habits and abdominal pain. It can detect polyps, colorectal cancer and other conditions affecting the lower digestive tract, with polyps often removable during the same procedure.Sigmoidoscopy
A sigmoidoscopy examines the rectum and lower part of the colon. It may be used to investigate symptoms such as rectal bleeding, changes in bowel habits and lower abdominal discomfort, or to assess specific colorectal conditions.
Signs You May Need an Endoscopy
If you are experiencing persistent digestive symptoms or have risk factors for gastrointestinal disease, your doctor may recommend an endoscopy. Some common reasons include:
- Persistent acid reflux or heartburn
- Difficulty swallowing
- Abdominal pain or bloating
- Nausea or vomiting
- Blood in the stool or black stools
- Unexplained weight loss
- Iron deficiency anaemia
- Changes in bowel habits
- Family history of gastrointestinal cancer
- Follow-up of previous polyps, ulcers or digestive conditions
Conditions That Can Be Diagnosed with Endoscopy
Endoscopy plays an important role in identifying conditions affecting both the upper and lower digestive tract. It allows direct visualisation of the gastrointestinal lining and can help detect abnormalities that may not be visible through imaging studies alone.
Oesophageal Conditions
Endoscopy can help diagnose conditions affecting the oesophagus, including gastro-oesophageal reflux disease (GERD), Barrett's oesophagus, oesophageal strictures and oesophageal cancer.Stomach and Duodenal Conditions
The procedure can identify gastritis, stomach ulcers, duodenal ulcers, upper gastrointestinal bleeding and certain stomach tumours. Biopsies may also be performed to investigate abnormal findings.Colorectal Conditions
Colonoscopy and sigmoidoscopy can detect colorectal polyps, colorectal cancer, inflammatory bowel disease, diverticular disease and other conditions affecting the colon and rectum.
Take a proactive approach to your digestive health. Endoscopy can help identify underlying conditions and provide greater clarity about your symptoms. Schedule a consultation with Dr Chew Min Hoe today.
What Treatments Can Be Performed During an Endoscopy?
Endoscopy is not only used to diagnose digestive conditions. In some cases, treatment can be performed during the same procedure, reducing the need for additional interventions.
Polypectomy
Polyps identified during an endoscopy can often be removed immediately. This is particularly important in the colon, where certain polyps may develop into cancer over time.Control of Gastrointestinal Bleeding
Endoscopy can be used to identify and treat sources of bleeding within the digestive tract, helping to prevent further blood loss and complications.Dilation of Narrowed Areas
If a section of the digestive tract becomes narrowed, endoscopic techniques may be used to widen the affected area and improve swallowing or the passage of food.Tissue Biopsy
Small tissue samples can be collected during an endoscopy for laboratory analysis, helping to confirm or rule out specific conditions.
What to Expect Before, During and After an Endoscopy
Understanding what happens before, during and after an endoscopy can help you feel more prepared for the procedure. While the exact process may vary depending on the type of endoscopy performed, most procedures follow a similar pathway.
Before the Procedure
Proper preparation is important to ensure clear visibility and accurate results. This may include:
- Fasting for six to eight hours before the procedure
- Temporary adjustment of certain medications, as advised by your doctor
- For colonoscopy, following a clear liquid diet and completing a bowel-cleansing regimen
During the Procedure
Most endoscopy procedures are performed under sedation to maximise comfort. During the procedure:
- Sedation may be administered to help you relax
- The endoscope is gently inserted through the appropriate entry point, depending on the type of procedure
- Gastroscopy typically takes 10 to 15 minutes, while colonoscopy usually takes 30 to 45 minutes
Recovery After the Procedure
Recovery is usually straightforward, with most people able to go home the same day:
- You will be monitored until the effects of sedation have worn off
- Mild bloating, cramping or throat irritation may occur temporarily
- Driving, operating machinery and making important decisions should be avoided for the remainder of the day
Your specialist will explain the findings and discuss any follow-up recommendations.
What Are the Risks of an Endoscopy?
Endoscopy is generally considered a safe procedure when performed by an experienced specialist. However, as with any medical procedure, there are potential risks and complications that patients should be aware of before undergoing treatment.
Bleeding
Minor bleeding may occur at sites where a biopsy is taken or treatment is performed. This is usually mild and resolves on its own.
Infection
Infections are rare due to strict sterilisation protocols, but they can occasionally occur following the procedure.
Perforation
In very rare cases, a small tear may develop in the lining of the digestive tract. This may require further treatment.
Sedation-Related Risks
Mild side effects such as nausea or drowsiness can occur after sedation. Serious reactions are uncommon and are closely monitored during the procedure.
Persistent digestive symptoms can sometimes indicate an underlying gastrointestinal condition. An endoscopy can help provide clarity and guide the next steps in your care.
Why Choose Our Clinic for Endoscopy in Singapore?
Choosing an experienced specialist is important for accurate diagnosis and a comfortable endoscopy experience. At our clinic, we provide comprehensive digestive health assessment and endoscopy services tailored to each patient's needs.
Experienced Colorectal and Endoscopy Specialist
Dr Chew Min Hoe has extensive experience performing gastroscopy and colonoscopy for the diagnosis, screening and monitoring of digestive conditions.Comprehensive Digestive Health Care
From initial assessment and endoscopic evaluation to treatment planning and follow-up care, patients receive coordinated and personalised care throughout their journey.Advanced Endoscopic Technology
We utilise modern endoscopic equipment that supports high-quality visualisation and accurate assessment of the digestive tract.Patient-Focused Experience
Your comfort, safety and understanding remain our priorities at every stage of the process, from consultation through recovery.
Frequently Asked Questions (FAQs) About Endoscopy
Most endoscopy procedures are performed under sedation to maximise comfort. Patients generally experience little to no discomfort during the examination. Mild bloating or throat irritation may occur afterwards depending on the type of procedure.
Our Endoscopy Doctor
Dr Chew Min Hoe
Senior Consultant, General & Colorectal Surgeon
MBBS (Singapore), MRCS (Edinburgh), MMed (Surgery), FRCS (Edinburgh)
Dr Chew Min Hoe is a Senior Consultant in General and Colorectal Surgery with extensive experience in endoscopy, including both gastroscopy and colonoscopy for screening and diagnostic purposes. With a strong focus on digestive and colorectal health, he provides thorough evaluation and clear guidance, helping patients make informed decisions about their care.
