If early-stage colorectal cancer does cause symptoms, early warning signs may include sudden weight loss and/or narrow, ribbon-like stools. Other common early warning signs of colorectal cancer include: Rectal bleeding, either bright or dark red in color. Narrow stools.
Signs and symptoms
The 3 main symptoms of bowel cancer are blood in the stools (faeces), changes in bowel habit – such as more frequent, looser stools – and abdominal (tummy) pain. However, these symptoms are very common and most people with them do not have bowel cancer.
Sometimes colon cancer can cause fatigue due to internal blood loss from the disease. In many cases, the symptoms of colon cancer are connected. Other colon cancer symptoms, such as unintentional weight loss and a change in bowel habits, can increase the feeling of weakness.
Many cases of colon cancer have no symptoms. If there are symptoms, the following may indicate colon cancer: Abdominal pain and tenderness in the lower abdomen. Blood in the stool.
Alternating constipation and diarrhea: A more telling sign of colon cancer. Blood in stool: Also known as hematochezia , which can be bright red if the tumor is near the rectum or dark red or maroon if higher up in the colon.
Rectal bleeding is the most obvious colon cancer symptom, but there are other, more subtle signs, like learning you're anemic. It may be the first sign that you're bleeding internally. Other signs are you can't catch your breath, you feel bloated or crampy and you have severe constipation.
Colon cancer is typically slow-growing, starting as a benign polyp that eventually becomes malignant. This process may occur over many years without producing any symptoms. Once colon cancer has developed, it may still be years before it is detected.
Most colorectal cancers start as a growth on the inner lining of the colon or rectum. These growths are called polyps. Some types of polyps can change into cancer over time (usually many years), but not all polyps become cancer. The chance of a polyp turning into cancer depends on the type of polyp it is.
Sometimes, a tumour can block the bowel, causing sudden strong pains in the stomach area, bloating and feeling or being sick. This is called a bowel obstruction. You may also be unable to empty your bowels or pass wind.
In most cases, colon and rectal cancers grow slowly over many years.
Though not as common, a person may experience excessive smelly gas due to the presence of cancer of the colon. Cancerous polyps or tumors can form blockages that cause gas to build up in the intestine. One early warning sign is when changes in diet or medication do not stop foul-smelling gas from occurring.
The most common tumor marker for colorectal cancer is carcinoembryonic antigen (CEA). Blood tests for this tumor marker can sometimes suggest someone might have colorectal cancer, but they can't be used alone to screen for or diagnose cancer.
Age. The risk of colorectal cancer increases as people get older. Colorectal cancer can occur in young adults and teenagers, but the majority of colorectal cancers occur in people older than 50. For colon cancer, the average age at the time of diagnosis for men is 68 and for women is 72.
Colorectal cancer might not cause symptoms right away, but if it does, it may cause one or more of these symptoms: A change in bowel habits, such as diarrhea, constipation, or narrowing of the stool, that lasts for more than a few days. A feeling that you need to have a bowel movement that's not relieved by having one.
Other ways to screen for colon cancer
Some of these include: Fecal immunochemical test (FIT): This is an inexpensive, at-home, stool-based test that looks for proteins found in the blood. Blood in the stool could be a sign of colon cancer, and a positive FIT test would signal that you need to get a colonoscopy.
What are the symptoms of colorectal cancer in women? They're actually the same for everyone, regardless of gender. The most common symptoms of colorectal cancer are blood in the stool, unintentional weight loss, and either ongoing constipation or diarrhea.
Scan for Color Changes
Colon cancer can cause bleeding in the digestive tract and make your stool a dark brown, maroon, or black. But that coloring could be caused by an ulcer or even what you've eaten, says David M. Poppers, M.D., Ph.
How often should you poop. You don't need to poop every day to be regular. It's normal and healthy to have a bowel movement anywhere between three times a week to three times a day. If you're producing soft, well-formed logs that aren't hard to push out, your bowels are probably in good shape.
Cancer and its treatment may cause problems that lead to patients having leg and other types of muscle cramps. Leg cramps or spasms are painful tightenings of the muscles in the leg, ankle, or foot.
Certain types of cancer can cause weight gain. Ovarian and colorectal cancer, for example, may cause fluid buildup in the legs or abdomen. This type of edema is called ascites.