Pneumoencephalo-roulette tomography of operated primary pontine haemorrhage with long survival: report of two cases.

Pre- and postoperative pneumoencephalo-roulette tomography has been carried out in two cases of primary pontine haemorrhage with long survival. A pontine or cerebellar atrophy was revealed in case 1, in whom an intrapontine haematoma was removed. A markedly hollowed pons on the affected side has been demonstrated nearly five months after ventriculoatrial shunting in case 2.