Blood clots, especially those that originate in the brain, can occur very quickly. If there are lots of veins around to adequately redirect blood flow, the clot will stop growing at a certain point and the body can accommodate it indefinitely. It may even disappear with time.
Signs and symptoms of colon cancer include: A change in your bowel habits, including diarrhea or constipation or a change in the consistency of your stool, that lasts longer than four weeks Rectal bleeding or blood in your stool
The symptoms are often characterized as localized changes that affect bowel habits or overall systematic changes that affect your whole body, such as fatigue and weight loss. Some changes in bowels habits may be considered colon cancer signs. They include: Change in frequency of bowel movements.