Figure 1.

MRI and pathological images of a 51-year-old woman who presented with decreased vision. Coronal and saggital T1WI (A and B) show a large suprasellar isointense mass. Coronal T2WI (C) demonstrates a heterogeneous hypointense midline lesion. Routine and contrast-enhanced axial CT (D and E) show a suprasellar lesion hyperattenuated to brain, with obvious homogeneous enhancement. Postcontrast coronal and saggital T1WI (F and G) show a mass with a well-defined margins and granulated enhancement. The pituitary gland appears normal. Note that within the mass there is a star-like crack (arrows in A, C, F, G) that shows hypointensity on T1WI and hyperintensity on T2WI. The star-like crack is enhanced after contrast. Photomicrograph (H) reveals abundant granular cytoplasm within the tumor cells. CT = x-ray computed tomography, MRI = magnetic resonance imaging.