title: Analysis of empty sella secondary to the brain tumors.
abstract: OBJECTIVE
  The definition of empty sella syndrome is 'an anatomical entity in which the pituitary fossa is partially or completely filled with cerebrospinal fluid, while the pituitary gland is compressed against the posterior rim of the fossa'. Reports of this entities relating to the brain tumors not situated in the pituitary fossa, have rarely been reported.
  
  
  METHODS
  In order to analyze the incidence and relationship of empty sella in patients having brain tumors, the authors reviewed preoperative magnetic resonance imaging (MRI) of 72 patients with brain tumor regardless of pathology except the pituitary tumors. The patients were operated in single institute by one surgeon. There were 25 males and 47 females and mean patient age was 53 years old (range from 5 years to 84 years). Tumor volume was ranged from 2 cc to 238 cc.
  
  
  RESULTS
  The overall incidence of empty sella was positive in 57/72 cases (79.2%). Sorted by the pathology, empty sella was highest in meningioma (88.9%, p = 0.042). The empty sella was correlated with patient's increasing age (p = 0.003) and increasing tumor volume (p = 0.016).
  
  
  CONCLUSIONS
  Careful review of brain MRI with periodic follow up is necessary for the detection of secondary empty sella in patients with brain tumors. In patients with confirmed empty sella, follow up is mandatory for the management of hypopituitarism, cerebrospinal fluid (CSF) rhinorrhea, visual disturbance and increased intracranial pressure.
authors.affiliation: Department of Neurosurgery, Konyang University Hospital, Daejeon, Korea.
authors.forename: Ji Hun
authors.initials: JH
authors.lastname: Kim
authors.forename: Jung Ho
authors.initials: JH
authors.lastname: Ko
authors.forename: Hyun Woo
authors.initials: HW
authors.lastname: Kim
authors.forename: Ho Gyun
authors.initials: HG
authors.lastname: Ha
authors.forename: Chul Ku
authors.initials: CK
authors.lastname: Jung