Surgery Mastoid infection in a 10 year old boy eroding through the outer coex of bone results in: A Acute coalescent mastoiditis B Subperiosteal abscess C Brain abscess D Lateral sinus thrombophlebitis 💡 Explanation Mastoid infection in a 10 year old boy eroding through the outer coex of bone results in: ✓ Correct Answer: B. Subperiosteal abscess