Rathke cleft cyst: MRI criteria for presumptive diagnosis

Academic Article

Abstract

  • Objectives: To define MRI criteria for the presumptive diagnosis of Rathke cleft cyst (RCC). Methods: One hundred and three patient MRI scans suggesting RCC performed between January 2005 and January 2011 were retrospectively reviewed for indications, cyst location, T1 and T2 signal intensity, dimensions, encroachment on optic chiasm, enhancement pattern, and stability over a year. Results: Of the 103 patients analyzed, the suggestion of RCC was an incidental finding in 82.5% (n=85) of patients. Headache was the most common symptom in 11.6% (n=12), visual field deficit in 3.8% (n=4), and both headache and visual field deficit in 0.97% (n=1). Te cyst was hyperintense on T1 in 55.3% (n=57), hypointense in 27.1% (n=28), and isointense in 17.4% (n=18). Te cyst was T2 hyperintense in 57.2% (n=59), and iso-hypointense in 42.7% (n=54). Te cyst showed no enhancement in 80.5% (n=83), and a thin marginal enhancement in 19.4% (n=20). Te cyst showed a stable appearance in 99% (n=102) of patients after at least one year follow-up MRI study. Conclusion: Rathke cleft cysts typically have a cystic appearance with T1 hyperintensity, sometimes with T1 iso- or hypointensity, variable T2 signal, and no or thin marginal enhancement and remain stable in size over time. Objectives: To define MRI criteria for the presumptive diagnosis of Rathke cleft cyst (RCC). Methods: One hundred and three patient MRI scans suggesting RCC performed between January 2005 and January 2011 were retrospectively reviewed for indications, cyst location, T1 and T2 signal intensity, dimensions, encroachment on optic chiasm, enhancement pattern, and stability over a year.
  • Published In

    Author List

  • Gaddikeri S; Vattoth S; Riley KO; DeHoff GW; Smith CB; Combs JT; Roberson GH
  • Start Page

  • 258
  • End Page

  • 263
  • Volume

  • 18
  • Issue

  • 3