Task: Question Answering
Input (English): Question: A 20-year-old man, with symptoms of ataxia, headache and solid-cystic mass in the right cerebellar hemisphere, underwent surgery, resecting a lesion that histologically shows cells with long and fine cytoplasmic processes, a fascicular and microcystic pattern, and numerous vessels and fibers. Rosenthal. The most likely antimopathological diagnosis is: 
 Options:  <1> Pilocytic astrocytoma. <2> Pleomorphic Xanthoastrocytoma. <3> Central neurocytoma. <4> Liponeurocytoma <5> Prion disease.
Output (English): 1