Rathke’s cleft cyst

  • arise from embryologic remnant of Rathke’s pouch
  • lies within pituitary gland, found adjacent to infundibulum (above the sella)
  • usually asymptomatic
  • T1 high signal intensity, sometimes similar signal to CSF
  • T2 variable signal intensity
  • No enhancement post Gd, wall is thin and smooth and may show mild enhancement