Although haemorrhoids and colorectal cancer share some common symptoms, such as rectal bleeding and bloody stools, they are two distinct conditions that vary significantly in terms of risk and severity.
Haemorrhoids, or piles as they are more commonly known, are structures in the anus comprising mainly blood vessels that help to preserve continence and prevent our stools from leaking. Haemorrhoids happen when the blood vessels in the anus and/or the lower rectum becomes swollen and inflamed. This can occur both internally and externally.
Some common causes of haemorrhoids include:
Though uncomfortable, haemorrhoids are usually not serious and can be treated with lifestyle changes, over-the-counter medications and sometimes medical procedures. Haemorrhoids is a common problem and affects around one in three people in Singapore, with men and women over the age of 50 most at risk.
Haemorrhoids are often alarming for patients, but in most cases, they are manageable and rarely dangerous. Early attention to bowel habits and lifestyle can make a significant difference and help prevent progression.
Colorectal cancer is a type of cancer that affects the colon or rectum. It usually starts from a growth or polyp. Polyps typically are not cancerous but if left alone, some can turn into colorectal cancers over time and spread into blood vessels or lymph nodes, and travel throughout your body.
Similar to haemorrhoids, colorectal cancer affects both men and women and is most commonly seen among adults age 50 and above. Although the diagnosis of young adults between the ages of 30 to 50 has been on the rise, with reasons still unknown. Regular colorectal cancer screening can help to detect the polyps early before they turn cancerous or allow for early medical treatment for better cancer survival rates.
Although haemorrhoids and colorectal cancer do share similar symptoms such as rectal bleeding and potential lumps at the anal opening, haemorrhoids do not cause colorectal cancer. Although these overlapping symptoms may cause some individuals to brush what could potentially be cancer off as “just haemorrhoids” and put off seeing their doctor, potentially giving cancerous cells more time to grow.
The bleeding caused by haemorrhoids happens during or after bowel movement, with the blood often appearing bright red. In most instances, the bleeding is painless, though sometimes it is accompanied by mild discomfort such as pain or itching around the anus. Meanwhile, the bleeding in colorectal cancer is more persistent and can occur at any time. The blood from colorectal cancer bleeding may also appear darker in colour and is often accompanied by other symptoms.
The danger lies not in confusing haemorrhoids with cancer, but in assuming bleeding when passing motion is always harmless. Any rectal bleeding that is new, persistent, or unexplained should be evaluated by a medical professional.
There are certain symptoms that may indicate your rectal bleeding may be caused by a more serious condition like colorectal cancer. Some symptoms of colorectal cancer to take note of include:
The key question to ask yourself is not how just much blood you see, but whether the bleeding fits into a broader pattern of change in your body. Persistent bowel discomfort may be another symptom that is hard to differentiate as while it may be a sign of either haemorrhoids or colorectal cancer, or it could also be caused by a variety of other medical conditions such as inflammatory bowel disease.
It is best to speak to your healthcare provider if you are experiencing symptoms.
The first step is always to seek proper medical evaluation to ensure you are treating the right condition. A physical examination will be conducted and if deemed necessary, additional screenings such as blood tests or colonoscopies too.
Treatment for haemorrhoids depends on the severity of symptoms and how much they affect daily life. Many cases improve with simple lifestyle changes such as increasing fibre and fluid intake, avoiding straining during bowel movements, exercising regularly, and taking warm baths to relieve discomfort. Medications, including topical creams, suppositories, and stool softeners, may also help reduce pain, itching, and swelling.
When symptoms persist despite conservative measures, minimally invasive procedures may be recommended. These include rubber band ligation, sclerotherapy injections, and infrared or laser treatments to shrink the haemorrhoids. In more severe or recurrent cases, surgical options such as haemorrhoidectomy or stapled haemorrhoidopexy may be considered.
Most cases of haemorrhoids respond well to simple, non-surgical measures. Surgical procedures are usually reserved for patients whose symptoms persist despite conservative care.
Meanwhile, treatment for colorectal cancer is tailored to the individual and depends on factors such as the stage and location of the cancer, as well as the patient’s overall health.
Colorectal cancer treatment is not one-size-fits-all. Medical professionals design each plan based on the tumor, stage of disease, and the patient’s overall health. When colorectal cancer is detected early, treatment outcomes are significantly better and may be less complex.
Surgery is often the mainstay of treatment and involves removing the tumour along with surrounding tissue. Depending on the case, this may be done using minimally invasive techniques, and some patients may require a temporary or permanent stoma.
Additional treatments such as chemotherapy and radiation therapy may be used before or after surgery to reduce the risk of recurrence or to shrink tumours. In selected cases, targeted therapies or immunotherapy may be offered based on the biological characteristics of the tumour. Ongoing follow-up care, including surveillance, symptom management, and nutritional support, is an important part of recovery and long-term health.
If left untreated, haemorrhoids may lead to infections or other health complications whereas untreated colorectal cancer may lead to the cancer cells spreading to the rest of the body and even death. The good news is that haemorrhoids are highly treatable with over-the-counter medications or simple procedures, and if detected early, so is colorectal cancer.
While haemorrhoids and colorectal cancer may share similar symptoms, understanding their differences is key to protecting your health. Rectal bleeding should never be ignored or assumed to be harmless, especially if it is persistent or accompanied by other changes in your bowel habits.
Early detection and timely medical advice make a significant difference. By paying attention to your body and seeking care when needed, you can take proactive steps towards maintaining long-term gut health and overall well-being.
