Knot-like on bone behind my child's right ear

My daughter is 7 years old and tonight I noticed a knot-like-lump behind her ear on the bone. It looks like a knot you would get if you hit your head on something, but she says she didn't hit her head anytime today or yesterday.  It looks normal color-wise and she says it is not sore at all.  As a matter of fact, she didn't know it was even there until i pointed it out to her and asked her about it. How can I be sure this isn't a sign of Cancer.  I am going  to take er to the doctor, but I can't help to think the worst. Everything I am seeing on the internet is scaring me.  Please let me know anything. Thanks

[drr1501910]

I once found a similar "knot" on the bottom in back of my neck.  It turned out to be a sebaceous cyst (covering over a cyst with a normal body tissue that we have)  Another reassurance the doctor told me that if it was moveable, it was a good sign.  I could finger the outline and was able to slide it around in very short distances.  It never got larger. I forgot about it.  Years later I realized that it went away. This is just a comment, not a diagnosis is intended.

[MamaSueBee]

She probably bumped herself so long ago that she does not remember. Trauma, even very mild trauma, can cause a cyst to form, and it takes time to form. Do this: feel the bump. Can you push it and feel some resistance? Does it move around, even slightly? It is probably a cyst. If it is close to the neck area and it feels hard to you, it is most likely a lymph node. When my daughter was in early grade school she had hard little nodes at the base of her skull near her neck. I was so worried about them. They were lymph nodes--doing their job. Sometimes they get hard because they are draining lymph--and they can feel quite hard. If you daughter is otherwise healthy and had a normal appetite, I'd just keep and eye on the bump for the next few months. See if it changes in any way. Don't pick at it and poke it. If you think it is a cyst and cannot resist poking it, then at least sterilize the area AND the needle with alcohol. Otherwise, be gentle and try not to bring attention to it too much. You don't want to worry your little girl needlessly. Hope it all works out!

[susie1228]

Ok Todd, hopefully you have already taken her to the doctor to discover it is a swollen gland.  My Grandson gets them too.  He has no pain, color is normal, and he inevitably has either an ear infection or strep throat.  She'll be ok.