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

Figure 3

Multisequential multiplanar magnetic resonance images of the spinal cord without contrast. Sagittal (a) and axial (b) T1-weighted MR images reveal an intradural extramedullar mass having a homogeneous high signal intensity, which is consistent with the T1-shortening effect of melanin located at the level of C3 (arrow). Sagittal T1-weighted MR images (c, d) reveal multiple intradural extramedullar small nodules with high signal T1 intensity (arrow) in the cauda equina.

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