Table 1.
Demographics and clinical characteristics of 11 subjects with superior semicircular canal dehiscence.
| Case no. | Sex/age | Side | Dehiscence size (mm)a | Follow-up periodb (months) | Operation | Autophony | Ear fullness | Hearing loss | Dizziness | Tulio/Hennebert | Pulsating tinnitus | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pre | Post | Pre | Post | Pre | Post | Pre | Post | Pre | Post | Pre | Post | ||||||
| 1 | F/58 | R | 3.18 | 46 | R) plugging (MFA) T1c | NP | NP | NP | NP | •* | ◦ | • | ◦ | • | NP | •* | NP |
| 2 | F/61 | R | 3.93 | 44 | R) plugging (MFA) | •* | NP | • | NP | NP | NP | NP | NP | NP | NP | NP | NP |
| 3 | M/56 | L | 4.01 | 51 | L) plugging (MFA) | •* | NP | • | NP | • | ◦ | NP | NP | NP | NP | • | NP |
| 4 | M/26 | B | 4.33 | 37 | L) plugging (MFA) | • | NP | • | NP° | NP | NP | •* | ◦ | • | NP | • | NP |
| 5 | M/47 | B | 3.9 | 30 | L) plugging (MFA) | •* | NP | • | NP | NP | NP | • | NP | • | NP | • | NP |
| 6 | F/45 | R | 3.07 | 25 | R) plugging (MFA) | • | NP | NP | NP | NP | NP | •* | ◦ | • | NP | • | ◦ |
| 7 | F/40 | B | 4.35 | 11 | R) plugging (MFA) | •* | NP | • | NP | NP | NP | • | NP | NP | NP | • | ◦ |
| 8 | F/49 | L | 5.48 | 9 | L) plugging (MFA) SPS encasing | •* | NP | • | NP | NP | NP | NP | NP | NP | NP | • | NP |
| 9 | M/53 | L | 4.98 | 7 | L) plugging (MFA) | •* | NP | • | NP | NP | NP | • | ◦ | NP | NP | •* | NP |
| 10 | F/50 | L | 4.13 | 5 | L) plugging (MFA) SPS encasing | •* | ◦ | • | NP | • | ◦ | • | NP | NP | NP | • | ◦ |
| 11 | M/56 | L | 5.24 | 3 | L) plugging (MFA) | •* | NP | NP | NP | NP | NP | • | NP | NP | NP | • | NP |
M, male; F, female; R, right; L, left; B, bilateral; MFA, middle fossa approach; SPS, superior petrosal sinus; NP, not present; •, present/ no change; °, improved; *, chief complaint.
Note that the length of the arc of superior semicircular canal dehiscence, which accounts for dehiscence size, was measured on a reformatted image in the plane of the superior semicircular canal.
Note that refers to period of follow-up from the surgery to the present. The status if postoperative symptoms after surgery is based on the present.
Note that the case No.1 accompanies chronic otitis media with tympanic membrane perforation. Surgical plugging via middle cranial fossa approach was performed following endaural tympanoplasty type I.