Bright lesions on sellar/parasellar T1-weighted scans

David M. Yousem, John A. Arrington, Ashok J. Kumar, R. Nick Bryan

Research output: Contribution to journalArticlepeer-review

Abstract

Eighty-seven patients with sellar and parasellar pathology were evaluated by magnetic resonance imaging to categorize lesions with hyperintensity on T1-weighted images. Postoperative fat packing after transsphenoidal hypophysectomy, intratumoral subacute or chronic hemorrhage in pituitary adenomas, and hemorrhagic or fat-containing craniopharyngiomas accounted for 33 of 35 abnormalities with short T1 values. Forty-three percent of nonsurgically treated pituitary adenomas had subacute intratumoral hemorrhage present. Using T2-weighted images to distinguish fat from subacute hemorrhage and attempting to identify the normal anterior pituitary gland on T1-weighted images may help to differentiate these three entities. T1-weighted images alone were not sufficient to distinguish between all sellar and parasellar masses.

Original languageEnglish (US)
Pages (from-to)99-105
Number of pages7
JournalClinical Imaging
Volume14
Issue number2
DOIs
StatePublished - May 1990
Externally publishedYes

Keywords

  • Magnetic resonance imaging
  • adenoma
  • hemorrhage
  • pituitary gland
  • sellar

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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