Changes in Stool Consistency and Blood: Should You Worry About Colon Cancer?

The stool was previously bloody and has now changed to a thin, ribbon-like shape?

In the past two weeks, my stools have become thinner or watery.
Two months ago, I experienced fresh blood after bowel movements twice, but now there is no blood.
I have a small polyp outside the anus (which is neither painful nor itchy) that has appeared for about four months, and I have not seen a doctor yet.
I have regular bowel movements.
Could this be a sign of colorectal cancer? I do not have other symptoms such as poor appetite, weight loss, anemia, or dizziness, and there is no family history of related illnesses.
Recently, I have been under a lot of stress from exams, staying up late, and not sleeping well.
Could this be related? Thank you.

Zhu Zhu, 10~19 year old female. Ask Date: 2015/10/14

Dr. Yang Zhichao reply Gastroenterology and Hepatology

Dear Miss Zhu, based on your symptoms, it seems more like irritable bowel syndrome.
However, since there is fresh blood in your stool, it is recommended to have a stool test.
If the test results are normal, you should pay attention to stress, exercise more, and eat more fruits and vegetables.

Changhua Hospital cares about your health.

Reply Date: 2015/10/14

More Info

When it comes to changes in stool consistency and the presence of blood, it is understandable to be concerned about the possibility of colon cancer. However, it is important to consider various factors before jumping to conclusions. Based on your description, you have experienced changes in stool consistency, occasional blood in the stool, and the presence of a small polyp. Let's break down these symptoms and their potential implications.

Firstly, changes in stool consistency, such as becoming thinner or more watery, can be attributed to a variety of factors, including dietary changes, stress, and gastrointestinal issues. Stress, particularly from exams and poor sleep, can significantly affect your digestive system, leading to irregular bowel movements. It is not uncommon for individuals under stress to experience changes in their bowel habits, including diarrhea or softer stools.

The presence of blood in the stool can be alarming, and while it is a symptom that warrants attention, it is not always indicative of colon cancer. Blood can arise from various sources within the gastrointestinal tract, including hemorrhoids, anal fissures, or benign conditions like diverticulosis. The fact that you have a small polyp that is not causing pain or discomfort may suggest that it is benign, but it is still essential to have it evaluated by a healthcare professional. Polyps can sometimes develop into cancer over time, so monitoring and possibly removing them is advisable.

Regarding your concerns about colon cancer, it is important to note that while blood in the stool and changes in bowel habits can be symptoms of colon cancer, they are not definitive indicators. Other symptoms of colon cancer may include unexplained weight loss, persistent abdominal pain, changes in appetite, and anemia. Since you mentioned that you do not have symptoms such as weight loss, decreased appetite, or anemia, your risk may be lower. Additionally, the absence of a family history of colon cancer is a positive factor.

It is also worth noting that the stool's appearance can vary based on diet. For instance, consuming certain foods can lead to changes in stool color and consistency. If you have recently altered your diet or experienced increased stress, these factors could contribute to your symptoms.

Given your situation, it is advisable to consult a healthcare professional for a thorough evaluation. They may recommend a colonoscopy to assess the polyp and check for any other abnormalities in the colon. This procedure is crucial, especially since you have experienced blood in your stool and changes in bowel habits. Early detection is key in managing any potential issues effectively.

In summary, while your symptoms warrant attention, they do not automatically indicate colon cancer. Factors such as stress, dietary changes, and the presence of benign conditions like hemorrhoids or polyps can all contribute to your symptoms. A healthcare professional can provide a more accurate diagnosis and recommend appropriate next steps. It is essential to prioritize your health and seek medical advice to address your concerns adequately.

Similar Q&A

Understanding Blood in Stool: Should You Worry About Colon Cancer?

Hello Doctor: I am twenty years old, and since September of last year, I have noticed occasional bright red streaks of blood in my stool. The amount is small each time; although I can see a few spots on the stool, there is no discoloration in the toilet water. The frequency is ab...

Dr. Chen Shidian reply Gastroenterology and Hepatology
It is possible that weight loss may occur. If it is not due to dietary changes, it is advisable to visit a gastroenterology clinic for evaluation. Please inform them about the weight loss.

Blood in Stool: Is It a Sign of Colon Cancer or Hemorrhoids?

Hello doctor, I have hemorrhoids and recently I've been experiencing some constipation. My stools are hard and flat; two of them do not have any blood, but one has blood mixed with the stool. I am concerned about the possibility of colon cancer.

Dr. Zhang Shuhao reply Surgery
The risk of colorectal cancer increases with age, family history, and exposure to carcinogens. If there is no significant family history, the likelihood of developing colorectal cancer before the age of 20 is extremely low. When stools are harder, bleeding during bowel movements ...

Understanding Changes in Bowel Movements: Should You Worry About Colon Cancer?

Hello Dr. Tsai, about four months ago, I noticed blood in the toilet after having a bowel movement. I went to the hospital for an examination and had a digital rectal exam, which suggested that it might be caused by hemorrhoids. Since then, I have been paying special attention to...

Dr. Cai Anshun reply Gastroenterology and Hepatology
Hello: If there are changes in your diet, you don't need to worry too much about changes in your stool pattern. However, you should pay attention to any unexplained weight loss, and if necessary, you can consult a gastroenterologist. Changhua Hospital cares about your health...

Understanding Changes in Stool: Potential Signs of Serious Issues

Hello, doctor. In the past few weeks, my stools have become thinner (about the thickness of a finger) and sometimes there is red blood settled at the bottom of the toilet. I have a bowel movement about every two days, roughly four times a week. I would like to know what possible ...

Dr. Zhang Kebin reply Gastroenterology and Hepatology
Hello, Ms. HaHa: You have a family history of colorectal cancer and are reporting that in the past few weeks, your stools have become thinner (about the thickness of a finger) and sometimes there is red blood settled at the bottom of the toilet. Given your family history and the ...