A member asked:

Rock hard, pea sized non tender non movable bump over mastoid bone behind left ear. been there for 3 months does not change in size? concern?

A doctor has provided 1 answer
Dr. Katharine Cox answered

Specializes in Pediatric Emergency Medicine

Follow: Likely a safe lymph node or if non mobile a small bone. It is tiny and non mobile and does not change. A US may be able to define it further but I'd doesn't sound bad. All the best.

Answered 8/27/2016

1.8k views

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