TY - JOUR
T1 - Multislice computed tomography overestimates superior semicircular canal dehiscence syndrome
AU - Re, Massimo
AU - Gioacchini, Federico Maria
AU - Salvolini, Ugo
AU - Totaro, Anna Maria
AU - Santarelli, Andrea
AU - Mallardi, Vito
AU - Magliulo, Giuseppe
PY - 2013/10
Y1 - 2013/10
N2 - Objectives: We assessed the prevalence of superior semicircular canal dehiscence (SSCD) through examination of ultrahigh- resolution computed tomography (CT) scans of the temporal bone and attempted to verify the correspondence between a radiologic diagnosis of SSCD and clinical signs of SSCD syndrome. Methods: A prospective study was carried out on 191 consecutive patients who underwent temporal bone ultrahigh-resolution CT scans. Cases that matched the radiologic diagnosis of SSCD were subsequently referred for a comprehensive audiological evaluation that might enable a final diagnosis of SSCD syndrome. Results: Among the 191 patients, 17 had a radiologic diagnosis of SSCD, which was bilateral in 5 cases, for a total of 22 SSCD cases, with a prevalence rate of 5.8%. In 2 of the 17 patients, the audiological examination revealed signs and symptoms indicative of SSCD syndrome, with a total prevalence rate of 0.5%. Conclusions: Our data confirm that the radiologic diagnosis of SSCD, performed by mean thin-section CT scans reformatted in the plane of the superior semicircular canal, is not necessarily related to the clinical presentation of SSCD syndrome. Our study also showed a prevalence rate of SSCD syndrome that was similar to the prevalence of SSCD reported from studies of histologic specimens.
AB - Objectives: We assessed the prevalence of superior semicircular canal dehiscence (SSCD) through examination of ultrahigh- resolution computed tomography (CT) scans of the temporal bone and attempted to verify the correspondence between a radiologic diagnosis of SSCD and clinical signs of SSCD syndrome. Methods: A prospective study was carried out on 191 consecutive patients who underwent temporal bone ultrahigh-resolution CT scans. Cases that matched the radiologic diagnosis of SSCD were subsequently referred for a comprehensive audiological evaluation that might enable a final diagnosis of SSCD syndrome. Results: Among the 191 patients, 17 had a radiologic diagnosis of SSCD, which was bilateral in 5 cases, for a total of 22 SSCD cases, with a prevalence rate of 5.8%. In 2 of the 17 patients, the audiological examination revealed signs and symptoms indicative of SSCD syndrome, with a total prevalence rate of 0.5%. Conclusions: Our data confirm that the radiologic diagnosis of SSCD, performed by mean thin-section CT scans reformatted in the plane of the superior semicircular canal, is not necessarily related to the clinical presentation of SSCD syndrome. Our study also showed a prevalence rate of SSCD syndrome that was similar to the prevalence of SSCD reported from studies of histologic specimens.
KW - Bone dehiscence
KW - Computed tomography
KW - Oscillopsia
KW - Semicircular canal
KW - Vertigo
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M3 - Article
C2 - 24294685
AN - SCOPUS:84887118139
VL - 122
SP - 625
EP - 631
JO - Annals of Otology, Rhinology and Laryngology
JF - Annals of Otology, Rhinology and Laryngology
SN - 0003-4894
IS - 10
ER -