Colorectal cancer--which is also called bowel cancer--occurs when abnormal cancerous cells begin to grow within the large intestine. In 2009, colorectal cancer accounted for nearly 50,000 deaths in the United States, based upon estimates provided by the National Cancer Institute (NCI). Speak with your doctor as soon as possible if you develop any signs and symptoms of colorectal cancer.
Nausea or Vomiting
If you have colorectal cancer, you can experience frequent episodes of nausea or vomiting as a result of this condition. Cancerous cell growth within the lining of the large intestine can cause you to experience stomach pain, cramping or bloating. Such symptoms are typically mild to moderate in severity and can be uncomfortable.
Diarrhea or Constipation
Colorectal cancer can cause noticeable changes in your bowel habits, explains the NCI. Patients with this condition can develop bouts of frequent, watery or loose stool production (diarrhea) or may find it abnormally difficult to have a bowel movement (constipation). Such symptoms can also be associated with abdominal pain, cramping or bloating.
Stool Changes
Irritation within the intestinal tract due to cancerous cell growth can cause blood to appear within the stool. If this occurs, your stools can appear very dark or bright red in color. As cancerous cells build up along the colon, your intestinal tract can begin to narrow. As a result, your stools can appear abnormally thin if you have this condition.
Weight Loss
Intestinal irritation caused by colorectal cancer can interfere with the ability of your body to absorb nutrients and fluids from the food that you consume. Additional signs and symptoms of colorectal cancer, such as nausea, diarrhea or constipation, can cause you to experience a decrease in your normal appetite. Diarrhea can also cause you to become malnourished or dehydrated. As a result of these symptoms, some patients with colorectal cancer can experience unintentional weight loss.
Fatigue
If your body is unable to obtain the needed nutrients from your daily dietary intake due to colorectal cancer, your cells will not receive the energy they need to function normally. When this occurs, your body cannot provide an adequate supply of energy to allow you to complete your normal activities. This can cause patients with colorectal cancer to feel abnormally fatigued or lethargic on a daily basis. If you have this condition, symptoms of fatigue can prevent you from completing the responsibilities associated with your work, social or school activities.
