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Interpeduncular cistern

The interpeduncular cistern (or basal cistern) is one of the subarachnoid cisterns. It is a wide cavity between the two temporal lobes anteriorly and encloses the cerebral peduncles as well as structures contained within the interpedunclar fossa.

It contains the circle of Willis and is continuous with the pontine cistern and the remainder of the subarachnoid space.

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