A 50-year-old man presents with a 5-month history of severe headaches. Vital signs and CBC are normal. Imaging studies demonstrate a mass in the fourth ventricle and hydrocephalus. The results of a...

A 50-year-old man presents with a 5-month history of severe headaches. Vital signs and CBC are normal. Imaging studies demonstrate a mass in the fourth ventricle and hydrocephalus. The results of a CT-guided biopsy are shown in the image. What is the appropriate diagnosis for this patient’s malignant neoplasm?

(A) Craniopharyngioma

(B) Ependymoma

(C) Glioblastoma multiforme

(D) Oligodendroglioma

(E) Schwannoma