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Hemorrhoids vs. Colorectal Cancer: Clarifying the Connection to Blood in Stools

woman sitting on the toilet with her hand on her stomach

In Singapore, concerns about blood in stools often lead individuals to consider serious conditions like colorectal cancer. However, blood in stools can also be a symptom of less severe conditions like hemorrhoids. Understanding the differences between hemorrhoids and colorectal cancer is crucial for early detection and appropriate treatment. 

This article aims to clarify the connection between hemorrhoids and colorectal cancer concerning blood in stools, providing insights into their symptoms, causes, and diagnostic approaches in the Singaporean context.

Understanding Hemorrhoids

Hemorrhoids, also known as piles, are swollen veins in the rectum and anus that can cause discomfort and bleeding. They are a common condition in Singapore, affecting individuals of all ages. Hemorrhoids can be internal, occurring inside the rectum, or external, forming under the skin around the anus.

Symptoms of Hemorrhoids

  • Rectal bleeding, often seen as bright red blood in stools or on toilet paper.
  • Anal itching or irritation.
  • Pain or discomfort during bowel movements.
  • A lump or swelling around the anus.

Causes of Hemorrhoids

  • Straining during bowel movements.
  • Chronic constipation or diarrhea.
  • Pregnancy and childbirth.
  • Sitting or standing for long periods.

Diagnostic Approach

In Singapore, healthcare providers diagnose hemorrhoids through a combination of medical history, physical examination, and, if necessary, additional tests such as anoscopy or sigmoidoscopy. These procedures allow healthcare professionals to visualize the rectum and anus and assess the severity of hemorrhoids.

Understanding Colorectal Cancer

Colorectal cancer is a malignant tumor that develops in the colon or rectum and is one of the leading causes of cancer-related deaths in Singapore. While less common than hemorrhoids, colorectal cancer can also present with blood in stools, making it essential to differentiate between the two conditions.

Symptoms of Colorectal Cancer

  • Rectal bleeding or blood in stools, which may appear darker or altered.
  • Persistent changes in bowel habits, such as diarrhea or constipation.
  • Abdominal pain or discomfort.
  • Unexplained weight loss.
  • Fatigue or weakness.

Causes of Colorectal Cancer

  • Age, with the risk increasing after the age of 50.
  • Family history of colorectal cancer or polyps.
  • Personal history of inflammatory bowel disease (IBD) or colorectal polyps.
  • Sedentary lifestyle and poor dietary habits.

Diagnostic Approach

In Singapore, individuals suspected of having colorectal cancer undergo a comprehensive diagnostic evaluation, which may include:

  • Colonoscopy: A procedure that allows healthcare providers to visualize the entire colon and rectum and take tissue samples for biopsy.
  • Stool Tests: Fecal occult blood tests (FOBT) or fecal immunochemical tests (FIT) may be used to detect blood in stools, indicating the presence of colorectal cancer.
  • Imaging Studies: CT scans or MRI scans may be performed to assess the extent of the cancer and identify any metastases.

Differentiating Between Hemorrhoids and Colorectal Cancer

While both hemorrhoids and colorectal cancer can cause blood in stools, several key differences help differentiate between the two conditions:

  • Age and Risk Factors:Hemorrhoids are more common in younger individuals and often occur due to lifestyle factors such as straining during bowel movements. In contrast, colorectal cancer is more common in older individuals, especially those with risk factors such as a family history of the disease or a personal history of colorectal polyps.
  • Nature of Bleeding:Hemorrhoids typically cause bright red blood in stools or on toilet paper, indicating bleeding from the rectum or anus. 
  • Additional Symptoms:Hemorrhoids may present with symptoms such as anal itching, discomfort, or a visible lump around the anus. 

Seeking Medical Evaluation

If individuals in Singapore experience blood in stools or other concerning symptoms, it is essential to seek medical evaluation promptly. Healthcare providers can conduct a thorough assessment to determine the underlying cause and recommend appropriate treatment or further investigations.


In Singapore, blood in stools can be a source of concern for individuals, raising fears of serious conditions like colorectal cancer. However, it is essential to recognize that blood in stools can also be a symptom of less severe conditions like hemorrhoids. By understanding the differences between hemorrhoids and colorectal cancer, individuals can seek timely medical evaluation and appropriate treatment, leading to better outcomes and improved health in the Singaporean context.

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