thanks for coming to just answer.
First of all, what is your doctor's diagnosis?
If he says it is fine, it is likely a sebaceous cyst.
These need to be removed.
They don't go away, but they are not cancer.
They swell up and will keep coming back.
If it is a node, a lymph node, and over 2 centimeters, hard, not moveable, and chronic, it should be biopsies.
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