Symptoms of Colorectal Cancer: What You Need to Know

Symptoms of colorectal cancer?

Hello Doctor: About a year ago, I suddenly experienced fresh blood during bowel movements, and the toilet paper was also stained with bright red blood.
This lasted for about three days and then stopped.
Until September of this year, I started taking deep-sea fish oil on the recommendation of my family, and after about three days, I began to experience rectal bleeding again, which lasted for about five days before returning to normal, and I stopped taking the fish oil.
Recently, I have been drinking pure unsweetened pineapple juice, but I have started to experience bloating and discomfort in my stomach, along with persistent fatigue and unexplained weight loss.
Although I have not had any more rectal bleeding, I am unsure if my bowel habits could be a precursor to colorectal cancer.
I have had gastrointestinal issues since childhood, having at least three bowel movements a day, with only one being well-formed; the others are not watery but also not fully formed, and I have never experienced constipation.
Therefore, I am uncertain how to interpret the changes in bowel habits associated with colorectal cancer symptoms.
I am very worried that if I do have cancer, it would affect my ability to work and support my family, which has caused me a lot of distress.
I am also concerned that the results of a colonoscopy might be unfavorable...
I would like to ask the doctor, what is the likelihood that my condition indicates colorectal or rectal cancer?

anthonyyan, 30~39 year old female. Ask Date: 2016/11/10

Dr. Ke Fangxu reply Surgery

At the age of 19, the likelihood of developing colorectal cancer is not zero, but generally speaking, it is relatively low.
Based on your description, it seems more like irritable bowel syndrome.
It is recommended to maintain a light diet and a good lifestyle routine, avoiding spicy, irritating, and greasy foods.
Deep-sea fish oil may prolong bleeding time, which could lead to easy rectal bleeding; if you experience this symptom, it is not advisable to take it.
If symptoms persist without improvement, you may consult a physician for medication.
If there is still no improvement or if you are very concerned, you can arrange for a colonoscopy; otherwise, worrying all day can affect your work and mood.

Reply Date: 2016/11/10

More Info

Understanding the symptoms of colorectal cancer is crucial for early detection and effective treatment. Based on your description, it is understandable that you are concerned about the possibility of colorectal cancer, especially given your history of rectal bleeding and changes in bowel habits.

Colorectal cancer can present with a variety of symptoms, and while some of these symptoms are non-specific, they can serve as important warning signs. Common symptoms include:
1. Rectal Bleeding: The presence of bright red blood in your stool or on toilet paper can be alarming. While rectal bleeding can be caused by conditions other than cancer, such as hemorrhoids or anal fissures, it is important to investigate the cause, especially if it occurs repeatedly.

2. Changes in Bowel Habits: This includes persistent diarrhea or constipation, a change in the consistency of your stool, or a feeling that your bowel does not empty completely. You mentioned that you have experienced changes in your bowel habits, which can be a symptom of colorectal cancer.

3. Abdominal Discomfort: Symptoms such as cramping, bloating, or persistent abdominal pain can also be associated with colorectal cancer. You noted experiencing bloating and discomfort after consuming certain foods, which may warrant further investigation.

4. Unexplained Weight Loss: Losing weight without trying can be a sign of various health issues, including cancer. You mentioned an unexplained weight loss, which is concerning and should be evaluated.

5. Fatigue: Persistent fatigue or weakness can be a symptom of many conditions, including cancer. If you feel unusually tired, it is important to discuss this with your healthcare provider.

Given your symptoms, it is advisable to seek a thorough evaluation from a healthcare professional. A colonoscopy is a key diagnostic tool for colorectal cancer, allowing for direct visualization of the colon and rectum, and the opportunity to take biopsies if necessary. While it is understandable to feel anxious about the results, early detection significantly improves treatment outcomes.

In terms of risk factors, certain lifestyle choices, family history, and age can increase the likelihood of developing colorectal cancer. If you have a family history of colorectal cancer or polyps, or if you are over the age of 45, your risk may be higher. Additionally, a diet low in fiber and high in processed foods can contribute to gastrointestinal issues.

It is important to note that while your symptoms may be concerning, they do not definitively indicate cancer. Many gastrointestinal issues can be benign and treatable. However, given the potential seriousness of colorectal cancer, it is crucial to address your symptoms with a healthcare provider who can guide you through the necessary tests and evaluations.

In summary, while your symptoms warrant further investigation, they do not automatically indicate colorectal cancer. A colonoscopy and consultation with a gastroenterologist can provide clarity and peace of mind. Early detection is key, and addressing your concerns with a medical professional is the best course of action. Remember, taking proactive steps towards your health is essential, and you are not alone in this process.

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