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
Symptoms of bowel cancer. The three main symptoms of bowel cancer are: persistent blood in the stools â that occurs for no obvious reason or is associated with a change in bowel habit. a persistent change in your bowel habit â which usually means going more often, with looser stools.