Figure 1:

A 23-year-old man who presented with progressive headache, bitemporal hemianopsia, polydipsia and polyuria, erectile dysfunction, cold intolerance, and constipation for 6 months. Hormonal profile showed low thyroid-stimulating hormone, follicle-stimulating hormone, luteinizing hormone, and testosterone. Sagittal CT scan of the brain demonstrates a large sellar and suprasellar isodense mass with the expansion of the sellar floor (a). Coronal MRI T1 without contrast shows a hyperintense sellar and suprasellar mass compression the third ventricle inferiorly (b). Sagittal MRI T1 with contrast demonstrates a similar hyperintense pattern of the lesion (c). Axial MRI T2 demonstrates an isointense pattern of the lesion and abutting the right clinoidal segment of the internal carotid artery (d).