Mucus in Stool: Signs and Concerns for Rectal Health - Surgery

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Mucus in stool


Hello Doctor, I have been preparing for exams and often sit for an entire day.
Recently, for the past six months, I have noticed mucus in my stool, about the size of a five to ten NT dollar coin.
Additionally, in the past three days, my stool has suddenly become slightly thinner.
My usual diet consists mostly of meat, and I often experience insomnia.
I am concerned whether this could indicate rectal cancer.
By the way, I had a fecal occult blood test a year ago, which did not show any issues, and I had an abdominal X-ray two months ago that also did not reveal anything.

Linda jjjjjj, 20~29 year old female. Ask Date: 2020/01/10

Dr. Ke Fangxu reply Surgery


At the age of 24, the likelihood of developing colorectal cancer is not zero, but generally speaking, it is very low.
Based on your description, it seems more like symptoms of hemorrhoids.
It is advisable to maintain a light diet and a good lifestyle routine.
Spicy, irritating, and greasy foods should be avoided, and increasing dietary fiber intake can also be beneficial.
If symptoms persist without improvement, you may consult a physician for medication or consider undergoing a colonoscopy.

Reply Date: 2020/01/10

More Info


Understanding mucus in stool can be concerning, especially when accompanied by changes in bowel habits or stool consistency. Mucus is a normal component of stool, produced by the intestines to lubricate the passage of waste. However, an increase in mucus production or changes in its appearance can indicate underlying health issues.

In your case, the presence of mucus in your stool, particularly the size you described (about the size of a five to ten cent coin), along with the recent change in stool shape (becoming thinner), warrants attention. While mucus alone is not a definitive sign of a serious condition, the combination of symptoms you mentioned could be indicative of several gastrointestinal issues, including inflammatory bowel disease (IBD), irritable bowel syndrome (IBS), or even colorectal cancer, particularly if these symptoms persist or worsen.

The fact that you have a diet high in meat and have experienced sleep disturbances could also play a role in your gastrointestinal health. A diet lacking in fiber can lead to constipation and may contribute to changes in stool consistency. Additionally, stress and lack of sleep can exacerbate gastrointestinal symptoms, potentially leading to increased mucus production.

Your previous tests, including a stool occult blood test and an abdominal X-ray, did not reveal any significant issues. However, it is important to note that these tests may not always detect early-stage colorectal cancer or other conditions. If you are experiencing new or worsening symptoms, such as persistent abdominal pain, significant changes in bowel habits, or blood in your stool, it is crucial to follow up with your healthcare provider for further evaluation.

Colorectal cancer typically presents with symptoms such as changes in bowel habits, rectal bleeding, unexplained weight loss, and abdominal discomfort. While your symptoms may not definitively indicate cancer, they should not be ignored. A thorough evaluation, which may include a colonoscopy, could provide more insight into your gastrointestinal health and rule out any serious conditions.

In summary, while mucus in stool can be a normal finding, the changes you are experiencing, particularly the increase in mucus and the alteration in stool shape, should be discussed with a healthcare professional. They may recommend further diagnostic testing to ensure that any potential issues are identified and addressed promptly. Maintaining a balanced diet rich in fiber, staying hydrated, and managing stress can also contribute positively to your digestive health. If you have any concerns or if your symptoms persist, do not hesitate to seek medical advice.

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