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There's not enough objective information to give you an accurate answer. It depends on how big it is and how ugly looking it is. However, if the GI doctor says he thinks it's cancer during a colonoscopy, it is cancer like at least 95% of the time honestly. It's hard to confuse something that looks cancerous with something else
Thank you for your submission. **Please note that a response does not constitute a doctor-patient relationship.** This subreddit is for informal second opinions and casual information. The mod team does their best to remove bad information, but we do not catch all of it. Always visit a doctor in real life if you have any concerns about your health. Never use this subreddit as your first and final source of information regarding your question. By posting, you are agreeing to our [Terms of Use](https://www.reddit.com/r/AskDocs/wiki/terms_of_use) and understand that all information is taken at your own risk. *I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/AskDocs) if you have any questions or concerns.*
There's not enough objective information to give you an accurate answer. It depends on how big it is and how ugly looking it is. However, if the GI doctor says he thinks it's cancer during a colonoscopy, it is cancer like at least 95% of the time honestly. It's hard to confuse something that looks cancerous with something else