high-resolution three dimensional mri findings after plugging surgery for superior semicircular canal dehiscence: a case report

Superior semicircular canal dehiscence (sscd) is known as abnormal communication of the superior semicircular canal (scc) to the intracranial space secondary to a bony defect in the canal. patients who are subjected to surgical repair usually have intractable symptoms, and recently, plugging of scc using a transmastoid approach has been widely recommended. in this report, we describe a case of incomplete plugging for sscd in a 37yearold woman, along with the highresolution three dimensional magnetic resonance imaging (3d mri) findings using pöschl view reconstruction. postoperative mri of 3d t2wieghted sampling perfection with application optimized contrasts using different flip angle evolution (space) pöschl plane demonstrated an incomplete plugging of the scc with partially visible perilymphatic fluid in the posterior limb above the common crus. a 3d fluidattenuated inversion recovery (flair) sequence showed an enhancement involving the vestibule and scc, suggesting labyrinthitis. although there are few reports about incomplete plugging for sscd, this case could demonstrate postoperative status and complication after plugging of sscd using a highresolution 3d mri sequences with pöschl view reconstruction.