: a small horizontal fold of the dura mater that roofs over the sella turcica and contains a small opening for passage of the infundibulum

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“Diaphragma sellae.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/diaphragma%20sellae. Accessed 7 Jul. 2026.

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