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Spontaneous extracranial pneumatocele associated with mastoid hyperpneumatization
M J Levenson1, G Ahuja, T Bergeron
1Department of Otolaryngology-Head and Neck Surgery, Manhattan Eye, Ear and Throat Hospital, New York, New York.
Archives of Otolaryngology--Head & Neck Surgery
|January 1, 1989
Summary
Spontaneous extracranial pneumatoceles are rare, often linked to trauma. This case highlights a spontaneous mastoid pneumatocele with extensive bone pneumatization, presenting as a compressible bulge.
Area of Science:
- Neurosurgery
- Radiology
- Otolaryngology
Background:
- Spontaneous extracranial pneumatoceles, air-filled sacs outside the skull not caused by trauma, are exceptionally uncommon.
- Mastoid pneumatoceles, specifically, are rare variants of this condition.
Observation:
- A patient presented with a soft, compressible swelling near the zygoma and ear.
- The swelling was identified as a large air sac originating from the mastoid region.
Findings:
- The pneumatocele was associated with unusually extensive pneumatization of the skull (calvarium) and mastoid bone.
- Surgical findings revealed the air sac was connected to non-traumatic defects in the tympanosquamous and tympanomastoid sutures.
Implications:
- This case expands the understanding of spontaneous extracranial pneumatoceles, particularly in the mastoid region.
- It underscores the importance of considering non-traumatic etiologies for such presentations.
- Further research into the genetic or developmental factors contributing to exuberant pneumatization may be warranted.