The case of a 40-year-old man who awoke with severe bilateral retro-orbital pain.A, Axial contrast-enhanced CT scan shows a nonenhancing homogeneous intrasellar.

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Presentation transcript:

The case of a 40-year-old man who awoke with severe bilateral retro-orbital pain.A, Axial contrast-enhanced CT scan shows a nonenhancing homogeneous intrasellar mass. The case of a 40-year-old man who awoke with severe bilateral retro-orbital pain.A, Axial contrast-enhanced CT scan shows a nonenhancing homogeneous intrasellar mass. No hemorrhage is seen.B, Coronal spin-echo T1-weighted MR image (500/20 [TR/TE]) shows a nonhemorrhagic intrasellar mass with extension to the optic chiasm.C, Coronal spin-echo T1-weighted MR image (500/20) shows minimal curvilinear marginal enhancement (arrow) after the administration of contrast medium (0.05 mmol/kg).D, Tensor diffusion-weighted MR image (b = 1000 mm2/s) shows increased signal intensity (arrow) within the pituitary mass, compared with that in normal gray and white matter.E, ADC map shows decreased signal intensity within the pituitary mass; mean ADC was 0.63 (10–3 mm2/s). Jeffrey M. Rogg et al. AJNR Am J Neuroradiol 2002;23:1240-1245 ©2002 by American Society of Neuroradiology