Pneumocephalus Classification

The accumulation of intracranial air can be acute (<72 h) or delayed (≥72 h) ¹⁾

Others classified it as early (<7 days) or late PNC (≥7 days) ²⁾.

It can be located in the epidural, subarachnoid, intraventricular, intracerebral, or subdural space, with the subdural space most frequent. The common site is frontal, followed by the occipital and temporal areas ³⁾.

Postoperative pneumocephalus

Typically asymptomatic and requires no treatment.

see Tension pneumocephalus.

Posttraumatic pneumocephalus.

Spontaneous pneumocephalus.

Intraventricular pneumocephalus.