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
1 Stool changes: In people with stage 4 colon cancer, the stool may appear unusually dark (owing to the blood in it) and thinner than normal. 2  It may also be covered in mucus. 3  Abdominal discomfort: Pain, cramping, bloating, nausea and gas may be felt by those with colon cancer. Abdominal discomfort: Pain, cramping, bloating, nausea and gas may be felt by those with colon cancer. 2  Jaundice: Since the colon cancer has normally spread to the liver by stage 4, jaundice is also a symptom. 3  Other symptoms include unexplained fever, weight loss, fatigue, thrombosis.