Is Your Constipation a Sign of Colon or Rectal Cancer?

Is bowel movement issues a sign of cancer?

Hello Doctor: Due to prolonged sitting, I have been experiencing chronic constipation and rectal bleeding.
In recent months, I have noticed something unusual; when I feel the urge to have a bowel movement, it feels blocked near the anal opening.
I either cannot pass stool at all or only a small amount of soft stool comes out.
The more I strain, the more it feels like my anus is blocked.
After some stool is passed, I experience swelling in the anal area, and sometimes I don't feel anything as the stool passes.
While sitting on the toilet, I also feel a sense of swelling between my bladder and pubic bone, and sometimes I need to massage that area to feel the urge to go.
When I do pass small amounts of soft stool, the color is normal but has an odor.
I believe I genuinely need to have a bowel movement, and it's not just a feeling of urgency without the ability to go; it feels like there is a blockage near the anal opening, with stool stuck inside.
Could this indicate colorectal or rectal cancer?

Lurend Ding, 30~39 year old female. Ask Date: 2018/11/02

Dr. Chen Qifeng reply Gastroenterology and Hepatology

Please visit a colorectal surgeon.

Reply Date: 2018/11/02

More Info

When it comes to gastrointestinal symptoms, particularly those involving constipation and rectal bleeding, it is essential to approach the situation with caution and seek medical advice. Your symptoms, including long-term constipation, a sensation of blockage near the anus, and the passage of small, soft stools, can be concerning. However, they do not automatically indicate colon or rectal cancer.

Understanding Your Symptoms
1. Constipation: Chronic constipation can result from various factors, including diet, hydration, physical activity levels, and even stress. Long periods of sitting, as you mentioned, can exacerbate constipation. It's crucial to ensure you are consuming enough fiber and fluids, as these are vital for maintaining regular bowel movements.

2. Rectal Bleeding: The presence of blood during bowel movements can be alarming. However, it is important to note that not all rectal bleeding is indicative of cancer. Common causes of rectal bleeding include hemorrhoids, anal fissures, or diverticular disease. Hemorrhoids, in particular, are a frequent cause of bright red blood on toilet paper or in the toilet bowl.

3. Sensation of Blockage: The feeling of blockage near the anus could be due to several reasons, including impacted stool, hemorrhoids, or even anal fissures. This sensation can lead to discomfort and the feeling of incomplete evacuation.

Cancer Considerations
While your symptoms warrant attention, they do not definitively point to colon or rectal cancer. Cancer typically presents with a combination of symptoms, which may include:
- A significant change in bowel habits (diarrhea or constipation) lasting more than a few weeks.

- Blood in the stool that is dark or tarry, indicating potential upper gastrointestinal bleeding.

- Unexplained weight loss.

- Persistent abdominal discomfort or cramping.

Recommendations
1. Consult a Specialist: Given your symptoms, it is advisable to consult a gastroenterologist or a colorectal specialist. They can perform a thorough evaluation, which may include a physical examination, a digital rectal exam, and potentially a colonoscopy to visualize the colon and rectum directly.

2. Diet and Lifestyle Modifications: Focus on increasing your fiber intake through fruits, vegetables, and whole grains. Staying hydrated is equally important. Regular physical activity can also help stimulate bowel function.

3. Monitor Symptoms: Keep track of your symptoms, including any changes in bowel habits, the appearance of blood, and any new symptoms that may arise. This information will be valuable for your healthcare provider.

4. Avoid Self-Diagnosis: While it is natural to search for information online, self-diagnosing can lead to unnecessary anxiety. Rely on professional medical advice for an accurate diagnosis and treatment plan.

Conclusion
In summary, while your symptoms are concerning and should not be ignored, they do not necessarily indicate colon or rectal cancer. It is crucial to seek a professional evaluation to rule out serious conditions and to receive appropriate treatment for your symptoms. Early intervention can significantly improve outcomes, whether the issue is benign or requires more intensive management. Remember, maintaining open communication with your healthcare provider is key to addressing your concerns effectively.

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