Related Experiment Video
Updated: Aug 24, 2026

Endaural Endoscopic Atticoantrotomy (Retrograde Mastoidectomy) using a Constant Suction Bone-drilling Technique
Published on: May 23, 2021
Hypertrophic chronic pachymeningitis associated with chronic otitis media and mastoiditis
Sho Kanzaki1, Yasuhiro Inoue, Takahisa Watabe
1Department of Otolaryngology, Head and Neck Surgery, Keio University Hospital, 35 Shinanomachi, Shinjuku, Tokyo 160-0082, Japan. skan@sc.itc.keio.ac.jp
Abstract:
We describe the case history of a 70-year-old female patient presenting with bilateral hearing disturbance, facial paralysis, and vertigo. Radiological tests of temporal bone revealed soft tissue in the mastoid and tympanic cavities, and T1 weighted MRI revealed prominent Gd enhancement of the middle skull basal meninges. Middle ear inflammation appeared to induce pachymeningitis and to exacerbate associated symptoms, leading to a decline in the patient's overall condition. Bilateral mastoidectomies were effective in improving her general condition. Her hearing improved only on the right side because ossiculoplasty was performed only on that side. Her facial movement progressively improved and pachymeningitis diminished over time. We speculate that removal of the infectious granulation within the middle ears and mastoids ameliorated the acute inflammation. The etiology remains unknown in this case.
Insights
A 70-year-old female experienced hearing loss, facial paralysis, and vertigo due to middle ear inflammation. Surgical removal of infected tissue (mastoidectomy) improved her condition and reduced inflammation.
Area of Science:
- Neurology
- Otolaryngology
- Radiology
Background:
- Middle ear inflammation can lead to serious complications, including pachymeningitis.
- Bilateral hearing disturbance, facial paralysis, and vertigo are significant symptoms requiring investigation.
Observation:
- A 70-year-old female presented with bilateral hearing disturbance, facial paralysis, and vertigo.
- Radiological imaging revealed soft tissue in the mastoid and tympanic cavities, with prominent meningeal enhancement on MRI.
- The patient's condition declined due to middle ear inflammation inducing pachymeningitis.
Findings:
- Bilateral mastoidectomies were performed, leading to improvement in the patient's general condition.
- Hearing improved on the right side post-ossiculoplasty; facial movement and pachymeningitis also diminished.
- Surgical removal of infectious granulation effectively ameliorated acute inflammation.
Implications:
- Surgical intervention for chronic middle ear inflammation can resolve associated neurological symptoms.
- Prompt diagnosis and treatment are crucial for managing complex cases of otitis media with meningeal involvement.
- Further research is needed to identify the unknown etiology in such cases.
Related Concept Videos
Bacterial Meningitis I: Introduction
Brain Abscess l: Introduction
Bacterial Meningitis II: Pathophysiology
Cryptococcal Meningitis
Atypical Pneumonia
Bacterial Meningitis
