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Granular cell tumor. T1-weighted postcontrast scan (A) demonstrates a large suprasellar mass with a heterogeneous pattern of enhancement that is clearly separate from the pituitary gland. Contrast-enhanced axial CT (B) shows a large mass with heterogeneous enhancement that is hyperattenuated compared with brain. (From Buhl R, Hugo HH, Hempelmann RG et al. Granular-cell tumor: a rare suprasellar mass. Neuroradiology 2001:43:309–12. Used with permission.)
