Rectal bleeding is one of those symptoms that people often ignore or feel too embarrassed to discuss. A small spot of blood on the toilet paper may seem harmless, but persistent or unexplained bleeding can sometimes be a sign of something more serious. Understanding when to seek medical advice and what modern treatments such as transanal surgery can offer. Learn why it could make a significant difference to your long-term health.
Concerned About Rectal Bleeding?
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What Is Rectal Bleeding?
Rectal bleeding refers to any blood that passes from the anus, often seen on toilet paper, in the toilet bowl, or mixed with stool. The colour and amount of blood can vary depending on the source of the bleeding.
- Bright red blood usually suggests bleeding from the lower bowel or anus.
- Dark or maroon blood may indicate a source higher up in the large intestine.
While rectal bleeding is common, it is not normal — and it should never be ignored, especially if it is recurrent or accompanied by other symptoms such as changes in bowel habits, abdominal pain, or unexplained weight loss.
Common Causes Of Rectal Bleeding
There are several possible causes of rectal bleeding, ranging from benign to serious. These include:
- Haemorrhoids (Piles) — Swollen veins around the anus that can bleed, itch, or cause discomfort during bowel movements.
- Anal Fissures — Small tears in the lining of the anus, often linked to constipation or passing hard stools.
- Rectal Polyps — Growths on the lining of the rectum that can bleed and, in some cases, become cancerous over time.
- Diverticular Disease — Small pouches that form in the bowel wall, sometimes leading to bleeding or infection.
- Inflammatory Bowel Disease (IBD) — Conditions such as ulcerative colitis and Crohn’s disease that cause chronic inflammation.
- Colorectal Cancer — A potentially serious but treatable cause if detected early.
The challenge is that symptoms can overlap — haemorrhoids and early cancer, for example, may look very similar. That is why it’s important to have any rectal bleeding properly evaluated by a colorectal specialist.
When To See A Specialist
You should seek medical advice promptly if you experience any of the following:
- Persistent rectal bleeding lasting more than a few days.
- Bleeding mixed with stool or accompanied by mucus.
- A noticeable change in bowel habits (such as constipation or diarrhoea).
- Unexplained fatigue, weight loss, or abdominal discomfort.
- A family history of colorectal cancer or polyps.
Early evaluation allows your doctor to determine the underlying cause and recommend the most appropriate treatment. Often, a simple colonoscopy or sigmoidoscopy can quickly identify the problem.
The Role Of Transanal Surgery
For certain conditions that cause rectal bleeding — especially rectal polyps, small early-stage cancers, or selected benign growths — transanal surgery offers an advanced, minimally invasive treatment option.
Unlike traditional open or laparoscopic surgery, which requires abdominal incisions, transanal surgery is performed through the natural anal passage. Using specialised equipment and a high-definition camera, the surgeon can precisely remove abnormal tissue from within the rectum without external cuts.
Benefits Of Transanal Surgery
- No Abdominal Incision — The entire procedure is done through the anus, reducing pain and visible scarring.
- Shorter Recovery Time — Many patients go home within a day or two.
- Lower Complication Risk — Less bleeding, infection, and postoperative discomfort.
- Preservation Of Bowel Function — Local tumour / polyp removal without removing excess rectum allows for preservation of function, hence maintaining quality of life.
This approach, known as Transanal Minimally Invasive Surgery (TAMIS), is particularly effective for removing benign or early-stage malignant rectal lesions that would otherwise require more extensive surgery.
Why Early Evaluation Matters
Rectal bleeding caused by polyps or early cancers can often be treated effectively and safely with transanal surgery. However, if diagnosis is delayed, the disease may progress to a stage where more invasive procedures — or even a permanent stoma — become necessary.
Early detection can therefore mean the difference between a straightforward, minimally invasive procedure and a complex, life-altering operation.
In addition, early treatment of benign causes such as haemorrhoids or fissures can greatly improve comfort and prevent chronic irritation or anaemia.
Our Preferred Doctor (Colorectal Surgeon) For Transanal Surgery
[SG] 365Find Featured - Dr Tan Yia Swam
Dr Chong Choon Seng 张峻诚医生
[SG] 365Find Featured - Nipple Discharge The Big Story
What To Expect During A Consultation
During your visit, a colorectal surgeon will take a detailed history and perform a physical examination. Depending on your symptoms, further investigations may include:
- Digital Rectal Examination
- Anoscopy or Sigmoidoscopy to inspect the lower rectum directly
- Colonoscopy to evaluate the entire large bowel
- Imaging Tests such as MRI or CT scans if needed
If a polyp or suspicious lesion is found, your surgeon may discuss minimally invasive options such as transanal surgery for diagnosis and treatment.
See A Colorectal Surgeon For An Early Evaluation
Rectal bleeding is a symptom — not a diagnosis. While it can be caused by minor conditions like piles, it can also signal something far more serious. The key is not to ignore it.
By consulting a specialist early, you not only gain peace of mind but also increase your chances of successful, minimally invasive treatment.
With advanced techniques such as transanal surgery, patients today can benefit from safer, more precise procedures and faster recovery — all while preserving normal bowel function and quality of life.
Preferred Doctors: Dr Chong Choon Seng (General Surgeon – Colorectal)
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This Article Has Been Reviewed By Dr Chong Choon Seng (Ark Surgical Practice).
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This article is informative only and is not intended to be a substitute for professional medical advice, diagnosis, or treatment, and should never be relied upon for specific medical advice.