SymptomsIf adenocarcinoma develops in the colon, the following symptoms might occur:
• a sensation that the bowels are full
• bloody stool
• rectal bleeding
• stomach pain
• unexplained weight loss
CausesColorectal cancer forms when the DNA in cells in the colon or rectum develop mutations that may make them unable to control growth and division. In many cases, these mutated cells die or are attacked by the immune system. But some mutated cells may escape the immune system and grow out of control, forming a tumor in the colon or rectum.The exact cause of colorectal cancer is not known, but certain risk factors are strongly linked to the disease, including diet, tobacco smoking and heavy alcohol use. Also, people with certain hereditary cancer syndromes or a family history of colorectal cancer have a high risk of developing the disease.
The following are usual causes:
• Genetics - Family history, Inherited syndrome, racial and ethnic background
• Lifestyle - Diet, inactive lifestyle, smoking, alcohol use.
• General - Age, (median age is 68 years, history of colorectal cancer or polyps, history of inflammatory bowel disease, Obesity, Type II diabetes
More about Treatment
What is Adenocarcinoma? If your doctor tells you that you have adenocarcinoma, it means you have a type of cancer that starts in the glands that line the inside of one of your organs. Adenocarcinoma can happen in many places, like your colon, breasts, esophagus, lungs, pancreas, or prostate. It's natural to feel worried when you find out you have cancer, but remember that treatments can slow or stop the disease. You might need chemotherapy, radiation, targeted therapy, or surgery. You and your doctor will decide on the best approach, based on where your tumors are growing and how long you've had them. Locations where Adenocarcinoma starts Your glands make fluids that your body needs to stay moist and work well. You get adenocarcinoma when cells in the glands that line your organs grow out of control. They may spread to other places and harm healthy tissue. Adenocarcinoma can start in the following organs: Colon and rectum - The colon, which is also called your "large intestine," is part of your digestive system. It's a long tube that helps remove water and nutrients from the food you eat. Adenocarcinoma is the most common type of colon cancer. It starts out as a small polyp, or growth, that's usually harmless at first but can turn into cancer. The disease can also start in your rectum, the part of your large intestine where the leftover waste from digested food, called stool, gets pushed out of your body. Breasts - Most breast cancers are adenocarcinomas. They start in the glands of the breast where milk is made. Esophagus - This is the tube that carries food from your mouth to your stomach. Adenocarcinoma usually starts in mucus glands that line the lower part of your esophagus. Lungs - Adenocarcinoma makes up about 40% of lung cancers. It's most often found in the outer part of the lungs and grows more slowly than other types of lung cancer. You usually get it if you're a smoker or used to be one. Pancreas - This is an organ in the back of your belly, behind your stomach. It makes hormones and enzymes that help digest food. About 85% of pancreatic cancers are caused by adenocarcinoma. These tumors start in the ducts of this organ. Prostate - This is a gland in men that's just below the bladder. It helps make some of the fluid that protects sperm cells. Adenocarcinoma starts in the cells that make this fluid. Most prostate cancers are this type.
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