Which of the following statements is TRUE about malignant brain tumors?
A) Most brain tumors arise from malignant neurons.
B) Primary brain tumors rarely metastasize outside the CNS.
C) The blood-brain barrier prevents secondary brain tumors.
D) Brainstem tumors do not manifest signs until they are quite large.

Question

Quizplus · Accepted Answer

Primary brain tumors rarely metastasize outside the central nervous system (CNS) because they are typically confined to the brain and spinal cord.

Which of the Following Statements Is TRUE About Malignant Brain