I'm sure you can feel what I can't see with my terrible vision, Lisa... lol .... I certainly believe you that there IS something there! I am praying that it is just some scar tissue. I would just keep feeling it for warmth and sensitivity to touch.... and of course, the obvious signs of illness from Magoo. Hoping and praying that none of these things will occur, and that all is well!!!
Please know we love Mr. Magoo and you, and are praying for him!!! ((((HUGS))))) and gentle pets for Magoo!!!!