Brief Answer: This's not typical of cancer of the colon Detailed Answer: Hi and thank you so much for this query. I am so sorry to hear about black spot in your stool that seems to have raised great fear and anxiety about possible cancer of the colon. I hope you would be able to relax while we look into this. Cancer of the colon would not preferably show up with a black spot that is so distinct and limited to just part of the stool. It is true that blood has a black color in stool but this is not the exact scenario with blood that originates from the colon. Blood from the colon would preferentially have a red color because it has not had enough time to get digested and transformed into blood the gut enzymes. Even if this were to be blood, it would not be coming from the colon. Also, you are consuming a black product that most probably explains the origin of this black pea shaped size spot on your stools. However, the last colonoscopy was 12years ago meaning the second one is long over due. It would be a great idea to get it done at this time so as to help you with the exact nature of this black spot and screen for colon cancer as well. Chances are more that this is related to the black licorice than to a cancer in the colon. I hope this addresses your query fully. If you have more related questions, feel free to ask me and I will gladly address them. I wish you the bes of health and thank you so much for using our services. Dr. Ditah, MD.

---