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Medical Definition of Cistern of chiasm
1. A dilation of the subarachnoid space below and anterior to the optic chiasm. Synonym: cisterna chiasmatis, cistern of chiasm. (05 Mar 2000)
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1. A dilation of the subarachnoid space below and anterior to the optic chiasm. Synonym: cisterna chiasmatis, cistern of chiasm. (05 Mar 2000)