What is an intra-axial neoplasm?
What is an intra-axial neoplasm?
Definition. Intra‐axial brain tumors are intracranial tumors arising from the neurons, supporting glial cells (astrocytes, oligodendrocytes, ependymal cells), lymphatic tissue, or blood vessels of the brain or from spread of cancers primarily located in other organs (metastases).
What is CNS neoplasm?
A central nervous system tumor (CNS tumor) is an abnormal growth of cells from the tissues of the brain or spinal cord. CNS tumor is a generic term encompassing over 120 distinct tumor types. Common symptoms of CNS tumors include vomiting, headache, changes in vision, nausea, and seizures.
What is an intra-axial lesion brain?
Intra-axial is a term that denotes lesions that are within the brain parenchyma, in contrast to extra-axial, which describes lesions outside the brain, and intraventricular, which denotes lesions within the ventricular system.
What is the most common cause of an intracranial neoplasm?
Pituitary adenomas are the most common intracranial tumors after gliomas, meningiomas and schwannomas.
What is an extra axial tumor?
Extra-axial tumors are lesions, neoplastic and not, which are external to the brain parenchyma and can originate in the skull, meninges, cranial nerves, and brain appendages such as the pituitary gland. Surgery provides a diagnosis and can be the first step in the treatment.
What is an extra axial brain tumor?
Extra-axial. Extra-axial is a descriptive term to denote lesions that are external to the brain parenchyma, in contrast to intra-axial which describes lesions within the brain substance.
What is axial anatomy?
Axis (anatomy) By the atlanto-axial joint, it forms the pivot upon which the first cervical vertebra (the atlas ), which carries the head, rotates. The most distinctive characteristic of this bone is the strong odontoid process known as the dens which rises perpendicularly from the upper surface of the body.
