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Otogenic Pneumocephalus After Tegmen Bone Reconstruction: A Case Report
Tawfiq Khurayzi1, Bayan Jan1, Reenad Bedaiwi1
1Department of Otorhinolaryngology-Head and Neck Surgery, King Abdullah Ear Specialist Center (KAESC), King Saud University, Riyadh, Saudi Arabia.
Ear, Nose, & Throat Journal
|June 17, 2020
Summary
Delayed otogenic pneumocephalus, a rare complication, occurred after middle ear surgery due to a dural defect and Eustachian tube communication. Prompt surgical repair resolved the intracranial air.
Area of Science:
- Neurosurgery
- Otolaryngology
Background:
- Pneumocephalus typically results from trauma, infection, or surgery.
- Spontaneous otogenic pneumocephalus is uncommon, and delayed postoperative cases are exceptionally rare.
- This case highlights a unique presentation of delayed pneumocephalus following meningoencephalocele repair.
Observation:
- A patient developed otogenic pneumocephalus via the Eustachian tube 10 days post-surgery for a right middle ear meningoencephalocele.
- Nose blowing preceded the onset of pneumocephalus.
- A lumbar drain-induced decrease in intracranial pressure facilitated air entry through an unsutured dural defect and a compromised posterior external auditory canal wall.
Findings:
- The pneumocephalus was attributed to a direct communication between the intracranial space and the middle ear/external auditory canal.
- The defect allowed air to enter the cranial cavity due to negative intracranial pressure.
- Surgical intervention successfully addressed the dural defect and Eustachian tube.
Implications:
- This case underscores the importance of meticulous dural closure and Eustachian tube management after middle ear and skull base surgeries.
- It suggests that even seemingly minor events like nose blowing can precipitate pneumocephalus in the presence of specific anatomical defects.
- Awareness of this rare complication is crucial for timely diagnosis and management in neurosurgical and otolaryngological practice.
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