Craniopharyngioma MRI

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]Associate Editor(s)-in-Chief: Sujit Routray, M.D. [2]

Overview

MRI

The MRI findings depends on the type of craniopharyngioma.[1]

Adamantinomatous

The findings on MRI are:

  • Cysts
    • Variable but 80% are mostly or partly T2 hyperintense
    • T1: iso- to hyperintense to brain (due to high protein content machinery oil cysts)
  • Solid component
    • T1 C+ (Gd): vivid enhancement
    • T2: variable or mixed
  • Calcification
  • Difficult to appreciate on conventional imaging
  • Susceptible sequences may better demonstrate calcification

MR angiography: It may demonstrate displacement of the A1 segment of the anterior cerebral artery (ACA).

MR spectroscopy: Cyst contents may show a broad lipid spectrum, with an otherwise flat baseline.

Papillary

The findings on MRI are:

  • Cysts
    • When present they are variable in signal
    • 85% T1 hypointense
  • Solid component
    • T1: iso- to lightly hypointense to brain
    • T1 C+: vivid enhancement
    • T2: variable/mixed

MR spectroscopy: Cyst contents does not show a broad lipid spectrum as they are filled with water fluid.

(Images courtesy of RadsWiki)

References

  1. MRI findings of Craniopharyngioma. Dr Dylan Kurda and Dr Frank Gaillard et al. Radiopaedia 2015. http://radiopaedia.org/articles/craniopharyngioma


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