If you're a normal, genetic male, this is normal. If you're female, then this would not be normal. In fact, a palpable structure at the farthest edge of the outer rearmost point on the skull is a way to tell one's birth gender in most instances: yes = genetic male, no = genetic female. Rarely (if ever) do gender reassignment surgeries eliminate this structure when transitioning from male to female.

Source: physical anatomy and anthropology courses.

EDIT: I suspect this "news" article is completely fraudulent, The Onion-style or an April Fools' joke.