My son had this, docs (eye specialist) said it was called some thing called a chalazian, basically just a small lump. We were told to used a hot compress to help it go down, and if it didn’t start to go down in a few months they would think about surgery to remove it but they didn’t really want to do that and wanted to give it plenty of time to go down by itself. They did say it could take a year or so to fully disappear I think.
It went down after a while and did disappear in the end. It never hurt him or bothered him really and I don’t think they are anything sinister. Start the hot compress morning and night now and see if it starts to go.
http://www.patient.co.uk/health/chalazion-leaflet