Colorectal Cancer

Colorectal cancer, commonly known as bowel cancer, is a cancer from uncontrolled cell growth in the colon, rectum, or appendix. Symptoms typically include rectal bleeding and anemia which are sometimes associated with weight loss and changes in bowel habits.

Most colorectal cancer occurs due to lifestyle and increasing age with only a minority of cases associated with underlying genetic disorders. It typically starts in the lining of the bowel and if left untreated, can grow into the muscle layers underneath, and then through the bowel wall. Screening is effective at decreasing the chance of dying from colorectal cancer and is recommended starting at the age of 50 and continuing until a person is 75 years old. Localized bowel cancer is usually diagnosed through sigmoidoscopy or colonoscopy.

Cancers that are confined within the wall of the colon are often curable with surgery while cancer that has spread widely around the body is usually not curable and management then focuses on extending the person's life via chemotherapy and improving quality of life. Colorectal cancer is the fourth most commonly diagnosed cancer in the world, but it is more common in developed countries. Around 60% of cases were diagnosed in the developed world. It is estimated that worldwide, in 2008, 1.23 million new cases of colorectal cancer were clinically diagnosed, and that it killed 608,000 people.

This text uses material from Wikipedia licensed under CC BY-SA

Latest Spotlight News

Validating maps of the brain's resting state

Kick back and shut your eyes. Now stop thinking. You have just put your brain into what neuroscientists call its resting state. What the brain is doing when an individual is not focused on the outside world ...

Scientists create way to see structures that store memories in living brain

Oscar Wilde called memory "the diary that we all carry about with us." Now a team of scientists has developed a way to see where and how that diary is written.

Wireless subretinal prostheses allows blind mice to see light

(Medical Xpress)—A team of researchers from the U.S. and Scotland has developed a new type of retinal prostheses designed to restore sight to blind patients. In their paper published in the journal Nature Co ...

Antioxidant shows promise in Parkinson's disease

Diapocynin, a synthetic molecule derived from a naturally occurring compound (apocynin), has been found to protect neurobehavioral function in mice with Parkinson's Disease symptoms by preventing deficits in motor coordination.

Distracted walking: Injuries soar for pedestrians on phones

More than 1,500 pedestrians were estimated to be treated in emergency rooms in 2010 for injuries related to using a cell phone while walking, according to a new nationwide study.

Laughing gas does not increase heart attacks

(Medical Xpress)—Nitrous oxide—best known as laughing gas—is one of the world's oldest and most widely used anesthetics. Despite its popularity, however, experts have questioned its impact on the risk ...

Researchers pinpoint how smoking causes osteoporosis

(Medical Xpress)—Human bone breaks down and regenerates naturally all the time, in a perfectly balanced dance that maintains skeletal integrity.

Model recreates wear and tear of osteoarthritis

(Medical Xpress)—There's a reason osteoarthritis is often called wear-and-tear arthritis: Repeated stress on joints over time results in degeneration of the soft cartilage that normally distributes loads ...

Study of vocal impersonations reveals how we manipulate our voices

A study of vocal impersonations has shown for the first time how speech production and voice perception systems in the brain interact to influence the way our voices sound. The research, supported by the ...

Review of research calls into question sex differences in face-to-face mate preferences

Women say they place a priority on a potential partner's earning prospects, and men claim to value a potential partner's physical attractiveness; these sex differences have been widely studied by psychologists for decades.