Mixed Germ Cell Tumor with Extensive Yolk Sac Tumor Elements in the Frontal Lobe of an Adult
Figure 1
Transaxial ((a)–(d)), sagittal (e), and coronal (f) magnetic resonance imaging (MRI) views before surgery showing a huge lesion (58 mm maximum diameter) with marked cyst components. This lesion extends from the right caudate nucleus to the anterior of the lentiform nucleus and the white matter of the frontal lobe. A T2-weighted image (WI) shows the mass as a hyperintense lesion with slight edema around the lesion (a). The right lateral ventricle and third ventricle are pushed to the upper left side, and the inferior horns of both lateral ventricles are mildly enlarged with paraventricular hyperintensity. The tumor exhibits isointensity in a diffusion-WI and a T1WI ((b), (c)). T1WIs with gadolinium (Gd) show a well-demarcated enhanced mass ((d)–(f)).
