Frontier Communications. Frontier Communications Corporation is a telecommunications company in the United States, which was previously mainly serving rural areas and smaller communities but now also serves several large metropolitan markets. It was known as Citizens Utilities Company until May 2000 and Citizens Communications Company until July 31, 2008.
The terms benign and pseudotumor derive from the fact that increased intracranial pressure may be associated with brain tumors. Those patients in whom no tumour was found were therefore diagnosed with pseudotumor cerebri (a disease mimicking a brain tumor).
Key Points. 1  An adult central nervous system tumor is a disease in which abnormal cells form in the tissues of the brain and/or spinal cord. 2  A tumor that starts in another part of the body and spreads to the brain is called a metastatic brain tumor. 3  The brain controls many important body functions.ogether, the brain and spinal cord make up the central nervous system (CNS). The tumors may be either benign (not cancer) or malignant (cancer): 1  Benign brain and spinal cord tumors grow and press on nearby areas of the brain. 2  They rarely spread into other tissues and may recur (come back).