Marked left greater than right hydrocephalus including left atrial entrapment including the temporal and occipital horns plus periventricular/subcortical edema, left greater than right.
There is 12 mm left-to-right shift of midline markers with left uncal and transtentorial herniation including brainstem deformity and effacement of the aqueduct.
1. MRI findings most consistent with choroid plexus origin neoplasm, papilloma versus carcinoma. Other considerations include meningioma, germ cell tumor, embryonal neoplasm (PNET, ATRT), or ependymoma, associated with marked hydrocephalus and edema.