What Is The Treatment For The Epidermoid Cyst On The Penis?

i went to the er to have a doctor look at a bump at the base of my penis, but a little more to the right. He said it was an epidermoid cyst. It is bout the size of a pea n i can roll my finger under my skin to feel the sac im guessing. He prescribed me some antibiotics but its still there after i finished them last week. It is just a little smaller than what it was but it tends to get irritated when i keep rolling my finger under my skin to feel the bump. Is it better to have them do an injection into it, or is it better for them to jus cut it and get it??