4 doctors weighed in:

I have extra bone in my head skull bump like a bone tumor?

4 doctors weighed in
3 doctors agree

In brief: Unlikely

Bone cancer is rare, so it is likely not a cancer right out of the gate.
Where is this lump, behind the ear? If so, it's likely normal anatomy (mastoid process). No skull is completely without irregularities, if you have symptoms such as pain, headaches, or increase in size would get it checked out, if not there's probably nothing to worry about.

In brief: Unlikely

Bone cancer is rare, so it is likely not a cancer right out of the gate.
Where is this lump, behind the ear? If so, it's likely normal anatomy (mastoid process). No skull is completely without irregularities, if you have symptoms such as pain, headaches, or increase in size would get it checked out, if not there's probably nothing to worry about.
Dr. Jeffrey Clemens
Dr. Jeffrey Clemens
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Dr. Eric Weisman
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