My 58 year old mother had developed this bump-like ,crusty cyst into her ear. Some kind of a liquid was also running from it and smells bad. We have noticed it 2 months ago as it went from a pimple size to a peanut size cyst. The Doctor said it seems like it is there for more than 5 months. Before the surgery, after the first test results the Doctors couldn't recognize if it is actually "acanthoma or carcinoma". Today she underwent a surgery. The doctors said it was very deep almost near the scalp of the head. They said that it was fully removed. The piece was brought for another test. Can you please let me know more about it? IS it dangerous?