A 77-year-old Caucasian man presents with an epidermoid cyst on his scalp, in the left parietal area. He tells you he has had the cyst for many years and it always seemed to remain the same. He is ...

I had one removed from my head when I was about eight-years-old and didn't have another until two years ago. Now I have three that have come up on my head beneath my hair.