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A member asked:

Hard non moveable knot on bone behinde ear not really sore bout the size of marble what could it be should i worry 31 yr old female?

A doctor has provided 1 answer

Mastoid process/node: A non movable knot in this location could be the mastoid process, a spike like downgrowth of the skull behind the ear where many neck muscles are anchored.It could also be a well anchored lymph node.An exam could differentiate the two.

Answered 6/19/2017

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