Female, 11 years old, with history of craniopharyngioma, follow-up examination after proton therapy. The heterogeneous, enhancing, cystic and solid lesion centered on the suprasellar cistern has decreased in size from the prior examination. For example, on axial images, the lesion measures 38 x 35 mm, previously 40 x 40 mm. The signal characteristics of the constituents cysts have also changed with a reduction in the quantity of T1 hyperintense material which may have represented hemorrhagic, proteinaceous or mucoid fluid.Mass effect on the adjacent structures does persist, particularly the optic apparatus, the proximal circle of Willis vessels, and the cerebral peduncles. The major intracranial flow voids remain visible. The lateral ventricles are slightly prominent but unchanged from the prior examination. No additional parenchymal lesions are seen. Sequelae of prior right frontal craniotomy are noted.
Interval decrease in size of the suprasellar craniopharyngioma.