Figure 6b. Suprasellar germinoma in a 38-year-old woman with amenorrhea. (a, b) Sagittal T2-weighted (a) and contrast-enhanced fat-saturated T1-weighted (b) MR images show a solid mass with a cystic area (arrow in a) and marked enhancement. The pituitary gland is compressed and flattened along the sellar floor (arrows in b). The tumor extends upward toward the infundibular recess. (c) Photomicrograph (original magnification, x400; H-E stain) shows uniformly proliferating tumor cells. In contrast to ovarian dysgerminoma, few fibrous septa are seen.