Premedullary cistern

Last revised by Frank Gaillard on 26 Jul 2022

The premedullary cistern is one of the subarachnoid cerebrospinal fluid cisterns.

Gross anatomy

It extends from the pontomedullary junction above, to the foramen magnum below, between the lower clivus and anterior medulla.

It is separated from the prepontine cistern above by the medial pontomedullary membrane.

Posterolaterally it communicates with the lateral cerebellomedullary cisterns


It contains several vessels and nerves:

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Cases and figures

  • Fig 1: cerebellomedullary cisterns
    Drag here to reorder.
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