lump on horse head!!!!

[samnpaddy]

Hi - my horse has developed a small lump on the top of his head just between his ears. We think the circumstances surrounding this were that he overreached (probably galloping down our field!) - i did find a small graze on his heel - pulled his shoulder and maybe somehow jolted his neck. My vet says he has probably chipped a small piece of bone as he jolted his neck. This lump doesn't bother my horse at all and my vet says that although it can be surgically removed it is not necessary. Has anyone had a similar incident and what course treatment if any did you follow?
Thanks

 

[bensababy]

Hi ya, my boy has a lump about 4cm under his eye - vet says its where he has knocked himself when he was younger and its just a calcium build up. It doesnt bother him - cant show him anymore as he gets marked down for it, and vet has advised that if it was removed where its so close to the eye he could suffer nerve damage if removed. So my theory is - if it doesnt bother him leave it alone.