一个30岁男性患者出现了持续一分钟的眩晕和严重的自听。CVEMP检查显示在左侧测试时阈值降低，可能表明有半规管裂。随后的MRI显示颞骨内出现多囊状的多叶形肿物，当时的放射学诊断是ELST。进行了肿瘤切除手术，并对切除物进行显微镜检查，结果显示纤维血管组织，没有乳头状或囊性突出的征象。组织学评估的结论是血管纤维瘤。我们未能找到关于由于内淋巴囊周围发生ENA的先前报告。《Laryngoscope》，2023年。©2023年美国喉咙科学、鼻科学和耳科学会。

A 30-year-old man presented with minute-long episodes of vertigo and severe autophony. CVEMP showed a decreased threshold when testing the left side, potentially indicating SSCD. A subsequent MRI demonstrated a multi-lobulated, cystic mass in the temporal bone and the radiological diagnosis at that time was ELST. Tumor excision was performed, and microscopic examination of the excised material revealed fibrovascular tissue without signs of papillary or cystic projections. The conclusion of the histological assessment rendered a diagnosis of angiofibroma. We were unable to find a previous report of ENA originating around the endolymphatic sac. Laryngoscope, 2023.© 2023 The American Laryngological, Rhinological and Otological Society, Inc.