Were they able to remove it at that size or just do a biopsy? That size I would personally consider a tumor and not a polyp. It takes about 2 weeks for results sometimes sooner. They will let you know at that stage if it is cancerous or not. Removal will be imperative, to prevent it from becoming cancerous if it is not already. Was it a bleeding mass do you know and did they refer you to a surgeon? That would be the next step regardless if its cancer or not for the removal. If it’s bleeding I would do it sooner than later.