Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Brain and Spinal Tumors ?
    ### Response:
    Tumors of the brain and spinal cord are abnormal growths of tissue found inside the skull or the bony spinal column. The brain and spinal cord are the primary components of the central nervous system (CNS). Benign tumors are noncancerous, and malignant tumors are cancerous.
    