Sarioglu FC, Pekcevik Y, Guleryuz H, Olgun Y, Guneri EA. Variations of the vascular canals in the cochlear implant candidates.
Int J Pediatr Otorhinolaryngol 2019;
123:123-127. [PMID:
31100707 DOI:
10.1016/j.ijporl.2019.05.001]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 04/11/2019] [Accepted: 05/04/2019] [Indexed: 10/26/2022]
Abstract
OBJECTIVE
To evaluate the incidence of vascular canal variations in the pediatric cochlear implant (CI) candidates.
METHODS
We retrospectively reviewed temporal bone computed tomography (CT) images of the CI candidates between November 2013 and November 2018. The presence of high riding jugular bulb, dehiscent jugular bulb, jugular bulb diverticulum, bulging of sigmoid sinus, mastoid emissary vein (MEV), carotid canal dehiscence, and aberrant internal carotid canal were evaluated. Findings were compared with a control group of normal-hearing subjects.
RESULTS
Temporal CT images of 118 CI candidates and 119 control group participants were evaluated. The vascular canal anomalies were found in 88 (37.3%) temporal bones of the CI candidates and 49 (20.6%) of the control group (p < 0.001). In 236 temporal CT scans of the CI candidates and 238 temporal CT scans of the control group, we found MEV in 19.1% and 6.3%, high riding jugular bulb in 11.4% and 10.5%, dehiscent jugular bulb in 2.1% and 1.3%, jugular bulb diverticulum in 6.4% and 1.7%, bulging sigmoid sinus in 11.4% and 4.2%, carotid canal dehiscence in 0.8% and 1.3%, and aberrant internal carotid canal in 0 and 0.8%, respectively. Jugular bulb diverticulum (p = 0.01), bulging of the sigmoid sinus (p = 0.003), and MEV (p < 0.001) were more frequent in the CI candidates.
CONCLUSION
Vascular canal variations are more common in the CI candidates and should be evaluated before CI surgery.
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