surg55Superior Semicircular Canal Dehiscence (SSCD) is characterized by a thinning of the bony ceiling of the superior semicircular canal, manifesting in auditory and vestibular deficits. SurgicalSurg55 Report abuse. Cookies. What would you like to report to team? Spam, Malware or Phishing. Sexually explicit. Violent or Dangerous. Hate speech, Harassment or