Philip Ajay, Mammen Manju Deena, Lepcha Anjali, Alex Anu
ENT Unit-4, Christian Medical College Vellore Association, Vellore, Tamil Nadu, India.
BMJ Case Rep. 2019 Jul 2;12(7):e229573. doi: 10.1136/bcr-2019-229573.
Third window defects have increasingly been identified as a cause of vertigo. These defects are bony dehiscences that occur in the bony labyrinth, resulting in abnormal pressure gradient in the inner ear fluids leading to sound (Tullio's phenomenon) or pressure (Hennebert's sign) induced vertigo. The superior semicircular canal dehiscence syndrome is a well-described entity in this regard, however defects of the posterior semicircular canal are rare and may have overlapping symptomatology. We describe the history, clinical profile and management of a patient who had importunate symptoms despite being on conservative management for a year and had resolution of vestibular symptoms following surgical management.
第三窗缺陷越来越多地被认为是眩晕的一个原因。这些缺陷是发生在骨迷路中的骨质裂隙，导致内耳液中异常的压力梯度，从而引起声音（图利奥现象）或压力（亨内伯特征）诱发的眩晕。在这方面，上半规管裂综合征是一个已被充分描述的病症，然而后半规管的缺陷很少见，且可能有重叠的症状表现。我们描述了一名患者的病史、临床特征及治疗情况，该患者尽管接受了一年的保守治疗仍有严重症状，而手术治疗后前庭症状得到缓解。
