title: Pituitary apoplexy caused by ruptured internal carotid artery aneurysm.
abstract: OBJECTIVE
  We report the first case of pituitary apoplexy caused by the rupture of an intracavernous carotid artery aneurysm embedded in a pituitary adenoma.
  
  
  METHODS
  A 46-year-old man presented with clinical and CT findings typical of pituitary apoplexy. MRI showed an unusual flow-void protrusion into the intratumoral hematoma, which, however, was not diagnosed as a ruptured aneurysm until severe intraoperative bleeding occurred. Angiography after surgery revealed an intracavernous carotid artery aneurysm.
  
  
  CONCLUSIONS
  The possible association of adenoma and aneurysmal rupture should be kept in mind when assessing any case of pituitary apoplexy.
authors.affiliation: Department of Neurosurgery, Mie Prefectural General Medical Center, Mie, Japan. miegmc1@wj8.so-net.ne.jp
authors.forename: H
authors.initials: H
authors.lastname: Suzuki
authors.forename: M
authors.initials: M
authors.lastname: Muramatsu
authors.forename: K
authors.initials: K
authors.lastname: Murao
authors.forename: K
authors.initials: K
authors.lastname: Kawaguchi
authors.forename: T
authors.initials: T
authors.lastname: Shimizu
mesh_terms: D017542:Aneurysm, Ruptured / Q000150:complications / Q000175:diagnosis* / Q000601:surgery; D016063:Blood Loss, Surgical; D002340:Carotid Artery Diseases / Q000150:complications / Q000175:diagnosis* / Q000601:surgery; D006801:Humans; D007431:Intraoperative Complications / Q000209:etiology; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D010899:Pituitary Apoplexy / Q000175:diagnosis* / Q000209:etiology / Q000601:surgery; D011388:Prolactin / Q000097:blood; D015175:Prolactinoma / Q000150:complications / Q000175:diagnosis* / Q000601:surgery; D012422:Rupture, Spontaneous / Q000175:diagnosis / Q000601:surgery
chemical_list: D011388:Prolactin