Patient 1. Patient 1. A 65-year-old woman presented with classic pituitary apoplexy manifesting as a sudden onset of severe headache, nausea, vomiting,

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High-signal-intensity lesions on T2-weighted MR images

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Presentation transcript:

Patient 1. Patient 1. A 65-year-old woman presented with classic pituitary apoplexy manifesting as a sudden onset of severe headache, nausea, vomiting, and visual disturbance. Also, she became drowsy because of severe dehydration and hyponatremia. A, Sagittal T1-weighted MR image showing low- to isointense masses in the nonenhanced pituitary lesion with diffuse high signal intensity. B, Sagittal T2-weighted MR image showing dark masses in the mixed high signal intensity area. C, Coronal T2*-weighted gradient-echo image showing dark masses indicating hematoma (white arrows). D, Photomicrograph showing hemorrhage and a small amount of chromophobic adenoma (H&E, original magnification ×40). M. Tosaka et al. AJNR Am J Neuroradiol 2007;28:2023-2029 ©2007 by American Society of Neuroradiology