UNASSIGNED: OBJECT Pituitary apoplexy is a rare and potentially life-threatening disorder that is most commonly characterized by a combination of sudden @entity10 , @entity227 , and @entity1640 . In many cases, there is hemorrhagic @entity1188 of an underlying @entity977 . The resulting clinical symptoms are due to compression of the remaining pituitary, cavernous sinuses, or cranial nerves. However, there are only 2 case reports in the literature describing spontaneous retroclival expansion of @entity548 secondary to @entity2894 . Ten cases of this entity with a review of the literature are presented here. METHODS This is a single-institution retrospective review of 2598 @entity1 with sellar and parasellar masses during the 10-year period between 1999 and 2009. The pituitary and brain MRI and MRI studies were reviewed by 2 neuroradiologists for evidence of apoplexy, with particular attention given to retroclival extension. RESULTS Eighteen @entity1 (13 @entity1 and 5 @entity1 ; mean age 54 years) were identified with presenting symptoms of sudden onset of @entity10 and @entity4610 , and laboratory findings consistent with @entity2894 . Ten of these @entity1 (8 @entity1 and 2 @entity1 ; mean age 55 years) had imaging findings consistent with @entity1410 . CONCLUSIONS Retroclival @entity548 was seen in the majority of cases of @entity2894 (56%), suggesting that it is more common than previously thought.

@entity1410 in XXXX : case series.

@entity1 :: ('9606', 'Species') :: ['women', 'patients', 'men'] @entity227 :: ('MESH:D014786', 'Disease') :: ['visual disturbance'] @entity548 :: ('MESH:D006470', 'Disease') :: ['hemorrhage'] @entity1640 :: ('MESH:D007027', 'Disease') :: ['hypothalamic/hormonal dysfunction'] @entity2894 :: ('MESH:D010899', 'Disease') :: ['pituitary apoplexy'] @entity4610 :: ('MESH:D009886', 'Disease') :: ['ophthalmoplegia'] @entity1188 :: ('MESH:D007238', 'Disease') :: ['infarction'] @entity1410 :: ('MESH:D006406', 'Disease') :: ['retroclival hematoma'] @entity977 :: ('MESH:D010911', 'Disease') :: ['pituitary adenoma'] @entity10 :: ('MESH:D006261', 'Disease') :: ['headache']
@entity2894 :: (MESH:D010899,Disease) :: ['pituitary apoplexy']
