Is It Possible That These Symptoms Indicate Colon Cancer?

Is it possible that this could be colon cancer?

Hello Doctor: My grandfather recently underwent surgery to remove an abdominal aneurysm.
Since the surgery, his appetite has worsened, and he has lost a significant amount of weight.
Recently, he has started experiencing bloody stools, which are quite frequent and dark in color, resembling tar.
After using the restroom, he feels unsteady and may even fall.
I have researched some information online and feel that this resembles colorectal cancer.
I would like to ask the doctor if this could possibly be colorectal cancer?

Y, 20~29 year old female. Ask Date: 2016/01/20

Dr. Ke Fangxu reply Surgery

If the stool color is as dark as tar, it may indicate upper gastrointestinal bleeding, especially after abdominal aortic aneurysm surgery, where anticoagulants are commonly prescribed.
Some anticoagulants can lead to peptic ulcers.
It is advisable to take your grandfather to see a cardiothoracic surgeon for evaluation, and if necessary, to change the type of anticoagulant.
If an endoscopy is required, a colonoscopy can also be performed simultaneously.
Poor appetite and weight loss are often due to the recovery process after surgery; however, the possibility of colorectal cancer in elderly patients must always be considered.

Reply Date: 2016/01/20

More Info

The symptoms you are describing, particularly the presence of dark, tarry stools (which may indicate the presence of blood), along with a significant decrease in appetite and weight loss, are concerning and warrant immediate medical attention. While these symptoms can be indicative of various gastrointestinal issues, including but not limited to colon cancer, they should not be ignored, especially given your family history and recent surgical procedures.

Colon cancer, or colorectal cancer, can present with a variety of symptoms, and it is important to recognize that not all symptoms are exclusive to cancer. Common symptoms of colon cancer include:
1. Changes in Bowel Habits: This may include diarrhea, constipation, or a change in the consistency of your stool. You mentioned that your stools have been dark and tarry, which can suggest bleeding in the upper gastrointestinal tract.

2. Blood in Stool: The presence of blood, whether bright red or dark, is a significant symptom that should be evaluated. Dark, tarry stools often indicate that the blood has been digested, which can occur with bleeding from higher up in the gastrointestinal tract.

3. Unexplained Weight Loss: A significant and unexplained loss of weight can be a red flag for many types of cancer, including colon cancer.

4. Persistent Abdominal Discomfort: This can include cramps, gas, or pain that does not go away.
5. Fatigue: Chronic fatigue can be a symptom of many health issues, including cancer.

Given your grandfather's recent surgery and the symptoms you are experiencing, it is crucial to consult with a healthcare professional as soon as possible. They may recommend diagnostic tests such as a colonoscopy, which allows for direct visualization of the colon and rectum, and can also facilitate biopsy of any suspicious lesions.

It is also important to consider other potential causes of your symptoms. Conditions such as peptic ulcers, diverticulitis, inflammatory bowel disease (IBD), or even hemorrhoids can cause similar symptoms. However, the combination of dark stools, weight loss, and decreased appetite is particularly concerning and should be evaluated promptly.

In terms of family history, having a relative with colon cancer can increase your risk, and it is advisable to discuss this with your doctor, who may recommend earlier screening or more frequent monitoring based on your family history and current symptoms.

In summary, while your symptoms could indicate colon cancer, they could also be due to other gastrointestinal issues. The best course of action is to seek medical attention immediately for a thorough evaluation and appropriate testing. Early detection is key in managing any potential health issues effectively.

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