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  2. Meningioma - Wikipedia

    en.wikipedia.org/wiki/Meningioma

    Mean relapse-free survival for atypical meningiomas was 11.5 years vs. 2.7 years for anaplastic meningiomas. [25] Malignant anaplastic meningioma is aggressive. Although anaplastic meningioma has higher chances of distant metastasis than the other two types, the overall incidence of meningioma metastasis is only 0.18%; which is considered rare ...

  3. Central nervous system tumor - Wikipedia

    en.wikipedia.org/wiki/Central_nervous_system_tumor

    It is often used after surgery or as the first line of treatment. The drug may be given systemically, by injection into a vein or by mouth, or may be injected into the fluid that surrounds the brain and spinal cord to allow the drug to reach the tumor without crossing the blood–brain barrier ( intrathecal administration ).

  4. Malignant meningioma - Wikipedia

    en.wikipedia.org/wiki/Malignant_meningioma

    Malignant meningioma is a rare, fast-growing tumor that forms in one of the inner layers of the meninges (thin layers of tissue that cover and protect the brain and spinal cord). Malignant meningioma often spreads to other areas of the body. The World Health Organization classification system defines both grade II and grade III meningiomas as ...

  5. Nervous system neoplasm - Wikipedia

    en.wikipedia.org/wiki/Nervous_system_neoplasm

    Nervous system neoplasms include various types of brain and spinal cord tumors, such as gliomas, and meningiomas (of the CNS), and schwannomas (of the PNS) and can be either benign or malignant. [1] In the CNS a tumor may be a secondary malignant tumor having metastasised (spread from a primary site in the body).

  6. Leptomeningeal cancer - Wikipedia

    en.wikipedia.org/wiki/Leptomeningeal_cancer

    This leads to an inflammatory response, hence the alternative names neoplastic meningitis (NM), malignant meningitis, or carcinomatous meningitis. [ 2 ] [ 3 ] The term leptomeningeal (from the Greek lepto , meaning 'fine' or 'slight') describes the thin meninges , the arachnoid and the pia mater , between which the cerebrospinal fluid is ...

  7. Nerve sheath tumor - Wikipedia

    en.wikipedia.org/wiki/Nerve_sheath_tumor

    Plexiform neurofibromas (associated with neurofibromatosis type 1) have a higher risk of transforming into malignant tumors and require individual treatment plans. [1] Surgical resection is the treatment of choice for symptomatic plexiform neurofibromas, though a new drug, selumetinib was approved in 2020, as a systemic therapeutic for ...