Pneumatocele is a rare complication following head trauma. Pneumocephalus occurs in 0.5 to 1% of head trauma cases. The pathophysiology is access of air into the cranium through a fracture involving air sinuses or middle ear roof or depressed fracture of skull resulting in a craniodural fistula. To the best of our knowledge, posttraumatic intracerebral pneumatocele in communication with ventricular system has not been reported earlier in English literature. We report a case of a posttraumatic pneumatocele presenting as cerebrospinal fluid (CSF) rhinorrhoea and having communication with the ventricular system