CRANIUM, FACIAL BONES AND PNS

• LINEAR FRACTURE: Jagged or irregular lucent line with sharp borders
• PITUITARY ADENOMA: Enlarged , eroded aspects of sella turcica
• MASTOIDITIS: increased densities (fluid-filled) replace mastoid air cells
• ACOUSTIC NEUROMA: widened internal auditory canal
• CHOLESTEATOMA: bone destruction involving middle ear
• OTOSCLEROSIS: excessive bone formation involving middle and inner ear