There are no lymph nodes located in the ear pinnae itself (the cartilaginous part) but as you mention they are in front of and behind the ear.
I am wondering why you are asking this maybe a lump inside your child's earlobe? I'd love to help you with further information if you feel that you need it so just reply and we can chat. Here is a nice diagram of the head/neck chains of lymph nodes...
Wow what a long URL
No actually I didn't mean to ask in pediatrics. I have one at the top of my ear. It's been there a while, I'm thinking where it was pierced one time.
Sorry your question was directed to us! But I can help you if you would like. If you pierced it up on the top the lump can stay for a very very long time even though the hole has closed.
The scar in the cartilaginous (hard) part takes a very long time to remodel due to the lack of body activity in that area unlike for example your hand that has a lot of blood flow and a lot more going on.
It's been probably 10-15 years. I figured it's either that or a cyst.
It is an unusual place for a cyst so if you did have a piercing there at one time I would vote for that. However if it were getting larger or painful/red etc...it would be time for your doctor to take a look at it.
Thanks! It doesn't hurt I just sometimes feel it when I rub my ear. That's all! :) thank you!