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The empty sella sign occurs due to herniation of the subarachnoid space into the sella turcica, displacing the pituitary gland and allowing CSF to occupy the space. [3] This phenomenon is often linked to the following mechanisms: [4] Primary empty sella syndrome occurs without an underlying cause or pituitary pathology. It is associated with a ...
Empty sella syndrome is the condition when the pituitary gland shrinks or becomes flattened, filling the sella turcica with cerebrospinal fluid instead of the normal pituitary. [2] It can be discovered as part of the diagnostic workup of pituitary disorders, or as an incidental finding when imaging the brain.
[6] [7] [8] A spontaneous spinal cerebrospinal fluid leak may occur sometimes in those with predisposing heritable connective tissue disorders including Marfan syndrome and Ehlers–Danlos syndromes. [ 5 ] [ 9 ] A loss of CSF greater than its rate of production leads to a decreased volume inside the skull known as intracranial hypotension .
Empty sella syndrome is the condition of a shrunken or flattened pituitary gland.. Since the sella turcica forms a bony caudal border for the pituitary gland, a pituitary tumor usually extends upward in the rostral direction into the suprasellar region.
Sheehan's syndrome; Other names: Simmond's syndrome, postpartum hypopituitarism, postpartum pituitary gland necrosis: Anatomy of normal pituitary gland and surrounding structures: Empty sella turcica on MRI as seen in severe cases of Sheehan's syndrome: Specialty: Endocrinology, obstetrics and gynaecology
Bamboo sign; Banana sign; Bat wing appearance; Bear paw sign; Beveled edge sign; Bird of prey sign; Bite sign; Black pleura sign; Blade of grass sign (also known as Flame sign); Blumensaat's line
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Pituitary apoplexy is regarded by some as distinct from Sheehan's syndrome, where the pituitary undergoes infarction as a result of prolonged very low blood pressure, particularly when caused by bleeding after childbirth. This condition usually occurs in the absence of a tumor. [4] Others regard Sheehan's syndrome as a form of pituitary apoplexy.