A 79-year-old man presents to the emergency room with severe right-sided weakness. He has noticed increasing difficulty using his right hand over the past several months and now walks with great...

A 79-year-old man presents to the emergency room with severe right-sided weakness. He has noticed increasing difficulty using his right hand over the past several months and now walks with great difficulty. His past medical history is significant for colon cancer that was resected 5 years ago. He has poorly controlled hypertension and admits to smoking two packs of cigarettes a day for the past 50 years. A CT scan of the brain reveals a discrete globoid lesion in the frontal lobe with a prominent halo of edema. A CT-guided biopsy reveals neoplastic cells. Which of the following is the most likely diagnosis?

(A) Craniopharyngioma

(B) Glioblastoma multiforme

(C) Medulloblastoma

(D) Meningioma

(E) Metastatic cancer