15 year-old male with history of infiltrating cerebellar astrocytoma status-post subtotal resection, here with headache. Evaluate for ICH. A right frontal shunt catheter has its tip in the left lateral ventricle. There is no significant ventricular dilation. The ventricular size is unchanged since the recent MRI.There is deformity of the cerebellar vermis with foci of calcification. This is compatible with residual tumor. However, evaluation of this is limited due to the lack of intravenous contrast.There is no evidence of intracranial hemorrhage.The calvaria and skull base are radiographically normal. The visualized paranasal sinuses and mastoid air cells are normally pneumatized.
1. No evidence of intracranial hemorrhage. 2. Partially calcified mass is again seen in the posterior fossa. This is incompletely evaluated due to lack of intravenous contrast.3. Unchanged right frontal shunt catheter with no evidence of hydrocephalus.