16 years, Male, pineal germinoma status post biopsy, third ventriculostomy with a Ommaya placement, chemotherapy, and radiation therapy.. Compared to MRI brain dated 9/30/2015, there is minimal decrease in size of enhancing pineal mass measuring approximately 10 x 14x 12 mm in the AP, transverse, and craniocaudal dimensions, previously 11 x 16 x 13 mm. Cystic components involving the bilateral thalami without enhancement are not significantly changed. Endoscopic third ventriculostomy is noted which appears patent, as evidenced by flow-void on the sagittal T1 sequence.No new mass or new focus of enhancement is appreciated. No abnormal leptomeningeal enhancement. Right transverse frontal Ommaya catheter is again seen with its tip at the right foramen of Monro. Ventricular system is within normal limits in size without evidence of hydrocephalus. No diffusion abnormality. Major flow-voids are preserved. Calvarium and extracranial soft tissues are grossly unremarkable.
Compared to MRI brain dated 9/30/2015 there is minimal decrease in size of enhancing pineal mass. No significant change in cystic component involving the thalami.