Teratom der Glandula pinealis

Magnetic

resonance imaging of pineal region tumours. Teratoma in a 56-year-old man with worsening confusion and ataxia. The pineal lesion (arrow) is hyperintense relative to brain with foci of very low signal on sagittal T1-weighted image (a) and mixed low, intermediate and high signal on axial T2-weighted image (b). Internal foci and peripheral rim of low signal on T1-weighted and T2-weighted images correspond to calcifications seen on axial CT image (c)