Is Your Stool Shape a Sign of Colon Cancer? When to Seek a Colonoscopy

The shape of stool can vary, sometimes being round and other times flat. This variation can be caused by several factors, including diet and hydration. However, persistent changes in stool shape, particularly if the stool becomes consistently flat or ribbon-like, can be a sign of colorectal cancer. It is important to consult a

Hello Doctor: I am 20 years old.
I had normal bowel movements on June 23, but starting June 24, my stools became flat.
Since then, they have occasionally been round and sometimes flat.
However, I had a visit to the clinic last month where I underwent an ultrasound and a stool occult blood test, both of which showed normal results.
This month, I suddenly started experiencing some dizziness, fatigue, and a sensation of shortness of breath.
Occasionally, I have noticed a small amount of blood on the toilet paper after wiping.
During this period, my stools have also been sticking to the toilet, and my flatulence has become very foul-smelling.
Should I consider getting a colonoscopy? What is the likelihood of colorectal cancer?

Mr. Zhang, 20~29 year old female. Ask Date: 2017/09/27

Dr. Cai Jinji reply Gastroenterology and Hepatology

It is recommended to undergo an examination by a colorectal specialist.

Reply Date: 2017/09/27

More Info

The shape of your stool can indeed provide important clues about your gastrointestinal health, and changes in stool shape can sometimes be a sign of underlying issues, including colon cancer. However, it’s essential to consider the broader context of your symptoms and medical history before jumping to conclusions.

In your case, you mentioned that your stool has been varying in shape, sometimes appearing flat or thin, and you have also experienced some concerning symptoms such as dizziness, fatigue, shortness of breath, and blood on toilet paper. While the presence of blood in your stool or on toilet paper can be alarming, it is not always indicative of cancer. Blood can result from various conditions, including hemorrhoids, anal fissures, or other benign issues. However, given your age and the recent changes in your stool, it is prudent to take these symptoms seriously.

The fact that you had a normal ultrasound and stool occult blood test last month is reassuring, but it does not entirely rule out the possibility of a developing condition. Colon cancer is less common in younger individuals, but it can still occur, especially if there is a family history of colorectal cancer or other risk factors. The symptoms you described, particularly the changes in stool shape and the presence of blood, warrant further investigation.

It is advisable to consult with a healthcare provider about your symptoms. They may recommend a colonoscopy, especially given the changes in your stool and the presence of blood. A colonoscopy is a valuable diagnostic tool that allows for direct visualization of the colon and rectum, and it can help identify any abnormalities, including polyps or tumors. Additionally, if there are any suspicious areas, biopsies can be taken during the procedure for further analysis.

In terms of timing, if you are experiencing significant symptoms such as fatigue, dizziness, or changes in bowel habits, it is best not to wait too long to seek medical advice. Early detection is crucial in managing any potential issues effectively.
In summary, while changes in stool shape can be benign, your combination of symptoms suggests that a more thorough evaluation is warranted. A colonoscopy can provide clarity and peace of mind, and it is a proactive step in ensuring your gastrointestinal health. Remember, it is always better to err on the side of caution when it comes to your health.

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