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January 1989

Spontaneous Extracranial Pneumatocele Associated With Mastoid Hyperpneumatization

Arch Otolaryngol Head Neck Surg. 1989;115(1):107-108. doi:10.1001/archotol.1989.01860250109038

• Spontaneous extracranial pneumatoceles unassociated with trauma are rare. We report a case of spontaneous extracranial mastoid pneumatocele associated with exuberant pneumatization of the calvarium and mastoid. The patient presented with a compressible bulge over the base of the zygoma and superior to the pinna. Surgical exploration demonstrated a large air sac in continuity with nontraumatic bony defects of the tympanosquamous and tympanomastoid sutures.

(Arch Otolaryngol Head Neck Surg 1989;115:107-108)