My wife age 31is diagosed sebaceous cyst on left occipetal bone, at back of head. Dr. Said only solution is excision. Plz advise. Regards?

Correct advice. It is not an urgent matter, however, if the cyst is bothersome, the only reliable way to get rid of it is by surgical excision. It could be done under local anesthesia and it not a dangerous operation. Wish you and your wife good health.