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Tension Pneumocephalus after Endoscopic Sinus Surgery: Case Report of Repair and Management in Absence of Obvious Skull Base Defect

Tension pneumocephalus is a rare complication of functional endoscopic sinus surgery that may lead to rapid neurologic deterioration. Patients typically display symptoms within hours after the operation, and computed tomography reveals the presence of a skull base defect. We report a unique case of subacute tension pneumocephalus with no obvious skull base defect, which was associated with a pupil-involving third-nerve palsy. Wediscuss management of this complication and preventive measures for avoiding pneumocephalus after functional endoscopic sinus surgery.