ABSTRACT
Pituitary apoplexy is an uncommon complication of pituitary adenomas. The syndrome
is manifest by an abrupt onset of signs and symptoms associated with infarction or
hemorrhage into a preexisting pituitary adenoma. The lesion swells and expands, leading
to compression of local suprasellar and parasellar structures. The incidence of pituitary
apoplexy ranges from 1 to 20% in surgically verified pituitary adenomas, with a slight
male predominance. Most frequently, pituitary apoplexy occurs in previously undiagnosed
pituitary adenomas. The diagnosis may often be confused with aneurysmal subarachnoid
hemorrhage or meningitis. When pituitary apoplexy is misdiagnosed and left untreated,
the neurological sequelae can be devastating, resulting in permanent blindness, coma,
or death. Glucocorticoid administration and transsphenoidal decompression remain the
mainstay of treatment in this acute event.
KEYWORDS
Pituitary adenoma - pituitary apoplexy - transsphenoidal surgery