ENT Department, UHSussex, Brighton, UK
ENT Department, UHSussex, Brighton, UK.
BMJ Case Rep. 2024 Nov 4;17(11):e257007. doi: 10.1136/bcr-2023-257007.
Schwannomas are benign tumours derived from Schwann cells of the peripheral nerve sheaths. A schwannoma arising in the external auditory canal (EAC) is rare, with few cases reported in the literature. These tumours present a unique challenge and should be considered when patients present with persistent ear symptoms in the absence of common otological pathology. We present a case of a man in his late 60s, referred to the otolaryngology team with unilateral conductive hearing loss and a right-sided EAC mass found on otoscopy. CT and MRI of the head and neck revealed a mass occluding the right EAC, originating from a peripheral cutaneous nerve. Management including biopsy, histopathological analysis and surgical excision in its entirety resulted in a good outcome, leaving a symptom-free patient.
神经鞘瘤是起源于周围神经鞘施万细胞的良性肿瘤。发生在外耳道(EAC)的神经鞘瘤很少见,文献报道的病例也很少。这些肿瘤带来了独特的挑战,当患者出现持续性耳部症状且无常见耳科学病理学改变时,应考虑到这些肿瘤的可能性。我们报告了一例 60 多岁的男性患者,因单侧传导性听力损失和耳镜检查发现右侧 EAC 肿块被转介到耳鼻喉科团队。头颈部 CT 和 MRI 显示肿块阻塞右侧 EAC,起源于外周皮神经。包括活检、组织病理学分析和完整切除在内的治疗方案取得了良好的效果,使患者无任何症状。