A CSF leak develops when performing a myringotomy. What is the next step helpful in planning surgical repair?
A. radionuclide cysternography
B. CT temporal bone
C. CT cysternography
Mondini deformity, patent lateral internal auditory canal, + defect in annular ring of stapes footplate results in CSF draining into middle ear. Patent Hyrtl fissure (congenital fusion plane between otic capsule and jugular bulb), no SNHL. Can be evaluated by CT. Also evaluates for erosion by cholesteotoma.