Circular mass centered in pineal region measures 12 x 11 x 9 mm and demonstrates homogeneous enhancement (on volumetric sequence for stereotaxis), peripheral calcification and diffusion restriction. It has mass effect on the adjacent structures with stenosis of the cerebral aqueduct (some flow still present on cine imaging) and associated non-communicating hydrocephalus affecting the lateral ventricles and 3rd ventricle. Periventricular FLAIR hyperintensity may represent some transependymal oedema superimposed on chronic small vessel disease.
Foramina of Monroe are patent. No other suspicious enhancing lesion, including of the leptomeninges. No suprasellar/sellar mass in non-dedicated study.