Shirai Ayako, Ono Daisuke, Mimura Kazuyuki, Yamamoto Kei, Kawamura Takayuki, Nozaki Yujin, Tanaka Sunao, Yamamoto Masaomi, Ohno Hideaki, Tsukada Kunihisa, Oka Hideaki
Department of General Internal Medicine, Saitama Medical Center, Saitama Medical University, Saitama, Japan.
Department of Infectious Diseases and Infection Control, Saitama Medical Center, Saitama Medical University, Saitama, Japan.
IDCases. 2025 Apr 1;40:e02214. doi: 10.1016/j.idcr.2025.e02214. eCollection 2025.
A previously healthy 58-year-old male initially presented to a healthcare facility with otorrhea in his left ear, accompanied by a scab in both the auricle and ear canal, with a lesion protruding from the left cavity and oozing discharge (day 0). The following day, the patient was transferred to our facility with fever and altered consciousness. Imaging studies, including computed tomography and magnetic resonance imaging, revealed a soft tissue mass in the left maxillary, ethmoid and sphenoid sinuses, and diffuse pus within the subdural space over the bilateral frontoparietal regions. Cerebrospinal fluid (CSF) analysis showed elevated opening pressure, increased white blood cell count, predominance of polymorphonuclear leukocytes, elevated protein levels, and reduced glucose levels compared to the serum. was identified in ear discharge, CSF, and blood cultures using matrix-assisted laser desorption ionization time-of-flight mass spectrometry. The presence of a papilloma in the left nasal cavity suggested that malignant otitis externa (MOE) served as the entry point for infection, leading to meningitis. The patient was treated with a combination of ceftriaxone and vancomycin, followed by ceftriaxone and cefotaxime, surgical resection of the tumor, and local debridement for infection control. To date, this is the first reported case of -induced meningitis secondary to MOE. Although rare, the detection of in otitis externa emphasizes the necessity of comprehensive evaluation of ear pathology to enable effectively source control as well as manage related infections and complications.
一名58岁既往健康的男性最初因左耳耳漏就诊于一家医疗机构,耳廓和耳道均有结痂,左腔有一肿物突出并渗液(第0天)。次日,该患者因发热和意识改变被转至我院。包括计算机断层扫描和磁共振成像在内的影像学检查显示,左侧上颌窦、筛窦和蝶窦有软组织肿块,双侧额顶叶区域硬膜下间隙有弥漫性脓液。脑脊液(CSF)分析显示,与血清相比,初压升高、白细胞计数增加、多形核白细胞占优势、蛋白水平升高和葡萄糖水平降低。使用基质辅助激光解吸电离飞行时间质谱在耳漏、脑脊液和血培养中鉴定出[具体病原体未给出]。左鼻腔存在乳头状瘤提示恶性外耳道炎(MOE)是感染的入口,导致了脑膜炎。该患者接受了头孢曲松和万古霉素联合治疗,随后使用头孢曲松和头孢噻肟,手术切除肿瘤,并进行局部清创以控制感染。迄今为止,这是首例报道的由[具体病原体未给出]引起的继发于MOE的脑膜炎病例。尽管罕见,但在外耳道炎中检测到[具体病原体未给出]强调了对耳部病变进行全面评估以实现有效源头控制以及管理相关感染和并发症的必要性。