But until a doctor actually examines you and looks at that lump or bump, there's no way to know. So especially with testicular or scrotal irregularities, if somebody says to me, I've got a lump ...

and lumps and bumps. So it's essential that when you do a testicular self-exam that you get used to understanding what you're like. It's like women with a breast exams. You learn the lumps and bumps.