<unk>  <unk>  is defined as herniation of subarachnoid space into the<unk>  turcica (arachnoidocele) in which there is a characteristic radiological finding of<unk><unk> r space" on magnetic resonance imaging (MRI) and computerized tomography (CT) with a flattened pituitary and elongated stalk. It can be partial if less than 50% of<unk> r space is filled with cerebro-spinal fluid (CSF), or complete if CSF fills more than 50% of space in the<unk>  and gland thickness is less than 2mm.
Empty sella syndrome
Pituitary apoplexy
Arachnoid cyst
Cavernous sinus thrombosis
Labyrinthitis
Vestibular tumor
Ménière's disease
Craniopharyngioma