Blood in Stool: Should You Worry About Colon Cancer?

Rectal bleeding

Hello, doctor! Today, after having a bowel movement, I noticed some bleeding, dark red in color and not much in quantity.
I have never had hemorrhoids before, and I experienced this situation a long time ago as well; today is the second time.
My diet is generally normal, I drink plenty of water, and I exercise regularly.
Should I be concerned that I have colon cancer? Do I need to see a doctor urgently? Thank you, doctor!

Guo Tongxue, 10~19 year old female. Ask Date: 2016/12/04

Dr. Ke Fangxu reply Surgery

This situation likely indicates a higher possibility of hemorrhoidal bleeding.
As long as there is no further bleeding, it should not be a concern.
It is recommended to avoid constipation during this period and to shorten the time spent on bowel movements.
Warm sitz baths may also help alleviate symptoms.
Over-the-counter hemorrhoid suppositories can be used, but it is best not to take laxatives indiscriminately.
At this age, increasing dietary fiber and fluid intake should be sufficient.
Although the risk of developing colorectal cancer at 18 years old is not zero, it is generally very low.
A light diet and maintaining a good lifestyle are advised, while spicy, irritating, and greasy foods should be avoided.
If symptoms persist without improvement, consulting a physician for medication may be necessary.
If there is still no improvement or if there are significant concerns, a colonoscopy can be arranged.

Reply Date: 2016/12/04

More Info

When it comes to the presence of blood in stool, it is understandable to feel anxious, especially with concerns about serious conditions like colon cancer. However, it's important to approach this situation with a clear understanding of potential causes and the appropriate steps to take.

Based on your description of dark red blood in your stool, it is essential to consider several factors. Blood in the stool can arise from various sources within the gastrointestinal tract, and not all instances indicate a severe condition like colon cancer. Common causes of blood in stool include hemorrhoids, anal fissures, diverticulosis, and gastrointestinal infections. In your case, since you mentioned that you have never experienced hemorrhoids and that this is not the first time you've noticed blood, it is crucial to evaluate the situation further.

Given your age and the fact that you maintain a healthy lifestyle with regular exercise and adequate hydration, the likelihood of colon cancer is relatively low. Colon cancer typically presents with other symptoms, such as significant changes in bowel habits, unexplained weight loss, persistent abdominal pain, or fatigue. However, family history can play a role in your risk factors. If there is a history of colon cancer in your family, it is wise to be more vigilant.

The color of the blood can also provide clues. Dark red or maroon blood often suggests bleeding from the lower gastrointestinal tract, such as the colon or rectum, while bright red blood typically indicates bleeding from the rectum or anus. Since you mentioned that the blood was dark red, it could suggest a source of bleeding that is further up in the gastrointestinal tract, but not necessarily indicative of cancer.

It is advisable to consult a healthcare professional, particularly a gastroenterologist, to discuss your symptoms and possibly undergo further evaluation. A stool test for occult blood can be a good starting point, as it helps determine if there is hidden blood in the stool that may not be visible. Depending on the results, your doctor may recommend a colonoscopy, which is a more definitive test that allows for direct visualization of the colon and rectum, and can also facilitate biopsies if necessary.

In the meantime, keep track of any additional symptoms you may experience, such as changes in bowel habits, abdominal pain, or weight loss. This information will be valuable for your healthcare provider in assessing your condition.

In summary, while the presence of blood in your stool warrants attention, it does not automatically mean you have colon cancer. Given your age and lifestyle, the risk is lower, but it is essential to seek medical advice to rule out any serious conditions and to address your concerns. Early intervention and diagnosis are key to managing any potential health issues effectively.

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