We report a pathologically proved craniopharyngioma in the prepontine cistern. A 50-year-old woman presented with swallowing difficulty for 1 month. She underwent brain MR and CT imaging.
T1-weighted, T2-weighted, and contrast-enhanced T1-weighted images showed a large peripheral enhancing cystic mass in the prepontine cistern. Inside the lesion, high signal intensity (SI) on T1 and low SI on T2-weighted imaging were noted (Fig 1). The CT scan showed features similar to those on the MR images, except for the addition of a peripheral small calcification in the cystic lesion. We could not find any connection between the mass in the prepontine cistern and the sellar or parasellar area. The mass was partially surgically removed, and histopathologic examination revealed craniopharyngioma in the prepontine cistern.
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- Fig 1. A 50-year-old woman with a craniopharyngioma in the prepontine cistern. A, Sagittal T1-weighted image shows a cystic mass in the prepontine cistern. B, Contrast-enhanced T1-weighted sagittal image shows a peripheral enhancing cystic mass in the prepontine cistern. Read more »
*This blog post was originally published at AJNR Blog*