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One study involving more than 1 million people with colon cancer from 2004 to 2015 found that 51.6% of those under 50 were diagnosed with stage three or four cancer, while 40% of people over 50 ...
The signs and symptoms of colorectal cancer depend on the location of the tumor in the bowel, and whether it has spread elsewhere in the body ().The classic warning signs include: worsening constipation, blood in the stool, decrease in stool caliber (thickness), loss of appetite, loss of weight, and nausea or vomiting in someone over 50 years old. [15]
Any abnormal bleeding, including menstrual irregularities*, bleeding from the vagina. blood in urine. Urothelial cancers, as in bladder or kidney cancer or GI cancers Uterine, ovarian or vaginal cancer *Postmenopausal vaginal bleeding is always abnormal and should be evaluated for possible cancer. Skin/Mucosa Persistent sore or ulcer ...
[12]: 619–620 Colorectal cancer can be detected through the bleeding of a polyp, colicky bowel pain, a bowel obstruction or the biopsy of a polyp at a screening colonoscopy. A constant feeling of having to go to the toilet or anemia might also point to this kind of cancer. [13]: 911
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Bowel cancer is the fourth most common type of cancer in the UK
Fecal occult blood testing (FOBT), as its name implies, aims to detect subtle blood loss in the gastrointestinal tract, anywhere from the mouth to the colon.Positive tests ("positive stool") may result from either upper gastrointestinal bleeding or lower gastrointestinal bleeding and warrant further investigation for peptic ulcers or a malignancy (such as colorectal cancer or gastric cancer).
Blood in stool looks different depending on how early it enters the digestive tract—and thus how much digestive action it has been exposed to—and how much there is. The term can refer either to melena, with a black appearance, typically originating from upper gastrointestinal bleeding; or to hematochezia, with a red color, typically originating from lower gastrointestinal bleeding. [6]