We have a medical application that a doctor would uses to track a current ailment and its healing progress.
For example, when a patient visits a doctor about swelling in their ankle, the doctor would use one of our drawing tools to draw "swelling" on an image (on a tablet device) of a patient's ankle indicating there is swelling in the ankle.
When the patient comes back the following week or month, the doctor can mark up the drawing with other tools, such as "healed" or "inflamed", depending upon the type of ailment it is.
One of the tools we are developing is a generic "nothing changed" tool. For reporting purposes, the doctor needs to use this tool to click on the ailment to confirm that the ailment is still there and that nothing has changed. I don't know what to call this tool. At present, it's called the "Nothing Changed" tool, but that's just not a great sounding tool.
What word in this context could be used to describe "nothing changed"?