Paranasal sinus which can be visualized best on a occipito-frontal view is: September 2009: (A) Frontal sinus, (B) Ethmoidal sinus, (C) Sphenoid sinus, (D) Maxillary sinus
Answer is A. Ans. A: Frontal Sinus Caldwell-Luc/ occipito-frontal view shows: Frontal sinus (Best visualization) Superior orbital fissure Superior marginof orbit and lamina papyracea Foramen rotundum Maxillary and ethmoid sinus