Anatomical aspects of the arteria inferior posterior cerebelli for posterior fossa surgery]

As the arteria inferior posterior cerebelli sometimes causes surprises of grave consequence at surgical approaches, its origin and course had to be described in detail. For this aim, we especially considered the local relationships of this artery with the medulla oblongata and the cranial nerves of the posterior fossa. Branches of the a. inferior posterior cerebelli supplying the medulla oblongata have been noticed in relation to the arterial supply of the medulla oblongata by corresponding vessels and the aa. spinales lateralis and posterior with special reference to all the possible collateralizations.