Welcome to JustAnswer...my name isXXXXX a licensed veterinarian, and will do my absolute best to assist you.
How large is the lump in diameter? When did you first notice it?
I noticed it yesterday, it is about the size of a dime
Thank you, it has helped set my mind at ease to know it is not any more heritary then any other breed and hopefully since hes young it will turn out ok.
Have a great day.