Ambient cistern

Last revised by Calum Worsley on 23 May 2021

The ambient cistern is part of the subarachnoid cisterns, filled with CSF.

Gross anatomy

The ambient cistern is a thin, sheet-like extension of the quadrigeminal cistern that extends laterally around the midbrain and posterior to the thalami. It acts as the connection between the quadrigeminal cistern and the interpeduncular cistern. The term "ambient cistern" may be used to refer to these connections and the quadrigeminal cistern as a whole.


It contains several vessels and nerves:

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Cases and figures

  • Case 1: labeled 37
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  • Case 2: ambient cistern arachnoid cyst
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