关键词: air bone gap hearing loss malleus head contact miscellaneous skull base defect superior semicircular canal dehiscence

Mesh : Adult Audiometry, Pure-Tone Bone Conduction / physiology Female Hearing / physiology Hearing Loss, Conductive / diagnosis etiology physiopathology Humans Male Malleus / diagnostic imaging Middle Aged Retrospective Studies Semicircular Canal Dehiscence / complications diagnosis physiopathology Tomography, X-Ray Computed / methods

来  源:   DOI:10.1177/00034894211007257   PDF(Sci-hub)

Abstract:
UNASSIGNED: Report a series of cases in which patients have concomitant superior semicircular canal dehiscence (SSCD) and a dehiscent tegmen tympani with Dural contact to the malleus head (DCMH).
UNASSIGNED: An analysis of radiologic and audiologic data in 4 patients who presented with SSCD and DCMH at a tertiary care institution. A pertinent literature review was performed.
UNASSIGNED: Four patients (5 ears) had SSCD and DCMH. In 3 patients with unilateral DCMH, the mean maximum air-bone gap was 15 dB in the ear with DCMH compared to 50 dB in the ear without DCMH. Of the 5 ears with DCMH, the mean air conduction threshold at 250 Hz was 17 dB compared to 42 dB in the 3 ears without DCMH.
UNASSIGNED: We report the findings of DCMH in a series of 4 patients with bilateral SSCD. This limited series suggests that ears with SSCD and DCMH have less of an air-bone gap than would be expected, as 1 would expect an additive effect of DCMH and SSCD on the air-bone gap.
摘要:
暂无翻译
公众号