Pneumocephalus is seen in fracture of: (A) Maxillary sinus, (B) Frontal sinus, (C) Sphenoid sinus, (D) Mastoid antrum
Answer is B. Pneumocephalus is the presence of air or gas within the cranial cavity.Pneumocephalus is seen in fracture of frontal sinus (Posterior table); may also be seen in ethmoid fracturesRef: Hazarika; 3rd ed; Pg 355