Hi, Thanks for writing to HCM. That lump can be a dermoid cyst, with a possible intracranial extension. You need to show it to a surgeon for a physical examination and a skull xray. That lump and the skin can be removed in a single sitting only simultaneously and they are mostly unrelated to each other, unless the lump truns out to be a lymph node. So it is advisable to get a needle biopsy of the lump prior to its excision, as it will help in planning the excision. Regards Dr. Ashish Verma