You would probably fair better if you went to the Wellspan Urgent Care Center versus the Emergency Room. Also, I would encourage you to call Dr. Prats and set up an appointment with him. He has removed fatty lumps from my daughter's arm. But! Just to be on the safe side (since its under the arm) until you get in with him go to Urgent Care.
I agree with Michele. If you plan to go to the emergency room make sure you plan on 4-8 hours.
Have a family doctor? Could call them when they open and have them advise you. If you need an answer now, there is someone on call with your family practice.
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