Hello, I sprained my ankle on Christmas Eve. Left ankle that I have sprained multiple times in the past few years with the original sprain happening in 2011. This most recent sprain I did like I ve always done... ice elevation and rest. The swelling is almost completely gone now BUT I have a small hard lump that has appeared on the side of my foot after this most recent sprain. I am trying to do some research to find out what it could be, and if I should be concerned?