Tension pneumocephalus is the presence of intracranial air under pressure which can
cause rapid neurological deterioration requiring emergency surgery. This is a report
of two cases of intracranial tension pneumocephalus. The first patient had a history
of emergent craniotomy due to a traumatic frontal depressed skull fracture with
minimal pneumocephalus. He complained of progressive weakness in the left limbs
and urinary incontinence 32 months after his head injury. A brain computed tomographic
scan showed compressive pneumo-ventricle and pneumocephalus. The
second patient complained of persistent headache and cerebrospinal fluid (CSF) rhinorrhea
two weeks after a road traffic accident. The brain computed tomographic scan
demonstrated a massive accumulation of air in the subarachnoid space of the cranial
cavity having a compressive effect on the brain. The first patient underwent a pterional
approach craniotomy and the dural defect was repaired with a dura substitute(
Neuropatch). The second patient underwent a bicoronal craniotomy with temporal
muscle fascia graft packing. The clinical symptoms of both patients improved
after the operations without neurological deficits. The diagnosis of pneumocephalus is
made according to clinical signs and the presence of intracranial air shown in the
brain computed tomographic scan. The main cause of failure of this treatment is the
lack of repair of the dural tear. Medical practitioners should always keep in mind the
possibility of tension pneumocephalus when patients having skull fractures complain
of headaches and neurological deterioration. Brain computed tomography is an effective tool in the early diagnosis of tension pneumocephalus.