Comacchio Francesco, Magnavita Paola, Bellemo Barbara
Otolaryngology Unit and Vertigo Regional Specialized Center, Sant'Antonio Hospital, Via J. Facciolati 71, 35127 Padova, Italy.
Department of Surgery, Padova University Hospital, Via Giustiniani 2, 35128 Padova, Italy.
Audiol Res. 2023 Apr 13;13(2):304-313. doi: 10.3390/audiolres13020026.
The association between acoustic neuroma and positional vertigo with paroxysmal positional nystagmus is relatively rare, but, when present, it certainly represents a challenge for the otoneurologist. There are few reports in the literature on this particular issue, and some questions are still unanswered, particularly regarding the characteristics of positional nystagmus that may distinguish between a true benign paroxysmal vertigo and a positional nystagmus associated with the tumor. We present the videonystagmographic patterns of seven patients with acoustic tumor who had paroxysmal positional nystagmus and analyzed its features. A concomitant true benign paroxysmal positional vertigo may be present during the follow-up of a non-treated patient, as the paroxysmal positional vertigo may be the first symptom of the tumor, and it may show characteristics that are very similar to a posterior semicircular canal canalolithiasis or a horizontal canal "heavy or light cupula". The possible mechanisms are discussed.
听神经瘤与伴有阵发性位置性眼球震颤的位置性眩晕之间的关联相对少见，但一旦出现，对耳神经科医生而言无疑是一项挑战。关于这一特殊问题，文献报道较少，一些问题仍未得到解答，尤其是关于可区分真正的良性阵发性眩晕与肿瘤相关位置性眼球震颤的位置性眼球震颤特征。我们展示了7例患有听神经瘤且伴有阵发性位置性眼球震颤患者的视频眼震图模式，并分析了其特征。在未接受治疗的患者随访期间，可能会同时出现真正的良性阵发性位置性眩晕，因为阵发性位置性眩晕可能是肿瘤的首发症状，且其表现特征可能与后半规管管结石症或水平半规管“重或轻嵴帽”非常相似。本文还讨论了可能的机制。
