When you have a colonoscopy and hear "we removed a few polyps," almost everyone's heart skips a beat. They say there is no big problem, but what you really want to know is something else: so when do I have to come back for the next exam? Surprisingly, there is no single clean answer to this. Depending on the type, size, and number of polyps removed, the next exam can be set for a year later, or five, or ten years later.
Not all polyps are the same kind of polyp. Broadly speaking, there are types with almost no chance of turning into cancer, and types that can change over time. What we commonly call adenomatous polyps fall into the latter group. The name of the polyp written on the pathology report, the degree of the word "dysplasia," and whether the removed polyp was larger than 1 cm are the information that decides the next interval. Many people do not even know what kind of polyp they had removed, but this is actually information worth keeping track of.
The rough picture is this. If one or two small benign polyps were removed cleanly, the next exam is usually set for about five years later. On the other hand, if there were several adenomas, a large one mixed in, or a slightly more concerning finding on pathology, you may be told to come back within three years, sometimes within one. Meanwhile, if there were no polyps to remove at all and the exam was clean, ten years is often mentioned. But these numbers are only an average guide; if you have a family history or have frequently had polyps removed in the past, the doctor may set a tighter schedule.
There is one part people often miss. It is when the bowel prep was not thorough enough at the first exam, or when a large polyp was removed in several pieces. In such cases, regardless of the set interval, it is common to be told to look again within a few months to a year. The aim is to check whether anything was left behind at the removal site. You might wonder, "Last time they said come back in five years, so why come back after just one?" This is the kind of situation behind it.
So after an exam, rather than just putting the results in a drawer, it is good to check once when the recommended timing for the next exam is written down. If you change hospitals or a long time passes, keeping track of your own records yourself is, in the end, the most reassuring. Marking it on a calendar in advance is one way. Just keeping to the follow-up interval well leaves quite a lot of room to head off serious colon disease in advance.
This article organizes general information, and the accurate follow-up interval suited to you should be based on the results from the hospital where you were examined and the guidance of your doctor.