Suprasellar Melanocytoma with Leptomeningeal Seeding: An Aggressive Clinical Course for a Histologically Benign Tumor

Figure 1

Multisequential multiplanar magnetic resonance images of the brain with and without contrast: axial T2 (a), axial FLAIR-weighted images (b), sagittal T1 (c), and contrasted coronal T1 (d). MRI images reveal a large mass centered on the suprasellar mass, continuous with the infundibulum of the pituitary gland. It is heterogeneously hyperintense on T1-, T2-, and FLAIR-weighted images (arrows in (a–c)), slightly enhanced. Normal pituitary tissue is seen in the bass of the fossa (curved arrow (d)) and a subarachnoid nodular mass in the medulla oblongata (curved arrow (c)).

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