Blood in Stool: Causes and When to Seek Further Testing - Gastroenterology and Hepatology

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Blood in the stool?


Hello, doctor.
Three years ago, I experienced rectal bleeding and underwent a colonoscopy, which revealed two internal hemorrhoids.
I had rubber band ligation performed, and a 0.3 cm hyperplastic polyp was found in the sigmoid colon, which was removed.
Last year, I had another colonoscopy, but it was only a partial examination, and no polyps were found.
However, the internal hemorrhoids have recurred, and this year I occasionally experience blood in my stool, usually the day after prolonged walking or sometimes after holding in the urge to defecate until I have time to go to the bathroom.
Additionally, the day after consuming spicy or hot foods, I notice some blood-tinged mucus at the end of my stool.
I generally try to eat plenty of vegetables and drink water, and I typically have a bowel movement once a day.
The stool is usually well-formed at the front but softer and less formed at the end.
Could my bleeding be caused by the internal hemorrhoids? Also, do I need to undergo another colonoscopy?

Guang, 30~39 year old female. Ask Date: 2015/07/30

Dr. Chen Qifeng reply Gastroenterology and Hepatology


Hello, based on the symptoms, it appears to be a recurrence of internal hemorrhoids.
Even after surgery, hemorrhoids can still recur.
Sincerely, Dr.
Chen Qi-Feng, Attending Physician, Department of Gastroenterology, Taoyuan General Hospital, Ministry of Health and Welfare.

Reply Date: 2015/07/30

More Info


Understanding blood in stool can be concerning, especially for someone with a history of hemorrhoids and polyps. Based on your description, it seems that your symptoms may indeed be related to your existing condition of internal hemorrhoids. Hemorrhoids can cause bright red blood to appear on the toilet paper or in the stool, particularly after straining during bowel movements or when experiencing constipation. The presence of blood mixed with mucus, as you described, can also be associated with hemorrhoids, especially if the blood is bright red and appears at the end of a bowel movement.

However, it is important to consider other potential causes of blood in the stool, especially given your medical history. While hemorrhoids are a common cause, other conditions such as anal fissures, diverticular disease, inflammatory bowel disease (IBD), or even colorectal cancer can also lead to similar symptoms. The fact that you have had a polyp removed in the past raises the importance of monitoring your bowel health closely.

Given that you have experienced recurrent symptoms, including blood in your stool after prolonged walking or straining, it would be prudent to consult with your healthcare provider. They may recommend a full colonoscopy, especially since you have a history of polyps. A colonoscopy can help rule out any new growths or changes in the colon that could be contributing to your symptoms. It is generally recommended to have regular screenings, especially if you have had polyps in the past, as they can sometimes recur or new ones can develop.

In addition to a colonoscopy, your doctor may suggest other diagnostic tests, such as stool tests to check for blood or infections, or imaging studies if they suspect other gastrointestinal issues. It’s also important to discuss your dietary habits, as you mentioned consuming a diet rich in vegetables and hydration, which is beneficial for bowel health. However, if you are experiencing symptoms after consuming certain foods, it may be worth keeping a food diary to identify any potential triggers.

In summary, while your symptoms may likely be related to your internal hemorrhoids, it is essential to rule out other causes, especially given your medical history. A follow-up colonoscopy is advisable, and you should discuss your symptoms and concerns with your healthcare provider to determine the best course of action. Regular monitoring and proactive management of your gastrointestinal health are crucial, particularly with your history of polyps and hemorrhoids.

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