25 years, Male, status post craniotomy for right cerebellar mass. Additional history per chart: history of medulloblastoma status post resection April 2007 followed by chemotherapy and radiation treatment, presented recently with cerebellar mass Compared to 3/30/2016, interval postsurgical changes related to resection of previously seen right cerebellar mass are seen. No residual tumor is definitively appreciated. There are areas of intrinsic T1 shortening and susceptibility related to blood products without definite enhancement. Postoperative changes include fluid in the right cerebellar resection cavity and adjacent to the craniotomy site. No large fluid collections or significant mass effect is demonstrated. Small areas of restricted diffusion are evident along the posterior margin of the resection cavity related to blood products and cytotoxic edema. No large infarct, hemorrhage, or new mass effect is evident. Vasogenic edema in the right cerebellar hemisphere is mildly improved. There is improvement in mass effect in the posterior fossa including deformity of the fourth ventricle and effacement of the right ambient cistern. Ventricles are not significantly changed in size and demonstrate no evidence of hydrocephalus. Scattered punctate foci of susceptibility in the brain are again seen and presumably related to prior radiation. Remainder of the brain demonstrates no abnormal parenchymal or meningeal enhancement or parenchymal signal abnormality.
Interval postsurgical changes of resection of right cerebellar mass. No residual tumor is definitively appreciated.