I recently had a colonoscopy and had a polyp removed. my doctor went on vacation right after. are all polyps precancerous or can they be like skin tags and be nothing?

Not all precancerous: Whether or not a polyp is precancerous depends on they cell type within the polyp and its size. Here's a link to some info on the different types of polyps: http://coloncancer.About.Com/od/coloncancerbasics/a/polyptypes.Htm. It's great that you had that polyp removed! congratulations on getting your colonoscopy done.

Hyperplastic polyp: Hyperplastic polyps are completely benign and have no cancer potential. They are more common than adenomas, which are precancerous polyps.