empty sella syndrome

empty sella syndrome
empty sella syndrome n a condition in which the subarachnoid space extends into the sella turcica causing it to become filled with cerebrospinal fluid, the pituitary gland is compressed, and the diaphragma sellae is greatly reduced but pituitary function usu. remains normal unless impaired by some other factor (as an infarction, irradiation, or a tumor)

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a syndrome diagnosed radiologically in which the diaphragma sellae is vestigial and the enlarged sella turcica forms an extension of the subarachnoid space and is filled with cerebrospinal fluid. The pituitary fossa appears empty, although the pituitary gland is present in a flattened form; pituitary hormone secretion may be normal, deficient, or excessive. Sometimes there is downward herniation of the optic chiasm, which leads to defects in the visual field.

Medical dictionary. 2011.

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  • empty sella syndrome — a congenital malformation of the bony structure (the sella turcica) that houses the pituitary gland such that the space is largely filled with cerebrospinal fluid, which squashes the usually spherical gland into a flattened shape against the… …   Medical dictionary

  • empty sella syndrome — a congenital malformation of the bony structure (the sella turcica) that houses the pituitary gland such that the space is largely filled with cerebrospinal fluid, which squashes the usually spherical gland into a flattened shape against the… …   The new mediacal dictionary

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