Tension pneumocephalus (TP) is described as the presence of a large amount of air in the cranial cavity, compressing the parenchyma and ventricles. It is a rare neurosurgical emergency and has been reported in only a handful of cases as a complication of transsphenoidal resection of a pituitary adenoma. Our reported case is an addition to the series of those cases. A 60-year-old male patient underwent transsphenoidal resection of a pituitary macroadenoma. Computed tomography (CT) of the head performed post-procedure showed post-surgical changes with no identification of any acute intracerebral processes. On postoperative Day 2, the patient had a bout of sneezing and since that time, he was noted to be more altered in terms of his mentation and lethargic with no focal neurological deficits. A repeat CT of the head showed a large amount of air in the intracranial cavity compressing the brain parenchyma with slit-like appearances of the cerebral ventricles. The patient underwent emergent bifrontal air evacuation through burr holes. A cerebrospinal fluid leak was also noted while reconstructing the skull base. A postoperative CT scan showed marked resolution of TP. The patient improved clinically, was discharged home five days later, and was monitored closely by the surgical team on an outpatient basis.
Keywords: pituitary adenoma; tension pneumocephalus; transsphenoidal surgery.