When Mount Fuji Can Erupt after Seven Days: A Case Report of Delayed Posttraumatic Tension Pneumocephalus with Literature Review.

Tension pneumocephalus (TPC) is a neurosurgical emergency that occurs when there is an expansion of trapped intracranial gas causing raised intracranial pressure. Rarely, posttraumatic TPC can occur even after 72 hours although the initial scans are normal. There are less than 20 cases of delayed TPC in the reported literature.