T1 sagittals pre-gad

Findings: Decreased signal lesion (a) involving the splenium of the corpus callosum (a), extending into the posterior body of the corpus and the adjacent cingulate gyrus (cing). Note the mass effect upon the quadrigeminal plate (qp) and cistern (qc). Vein of Galen (vog). Parietooccipital sulcus (pos). Superior sagittal sinus (sss). Massa intermedia (mas). Left thalamus (thal).