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A brain metastasis is a cancer that has metastasized (spread) to the brain from another location in the body and is therefore considered a secondary brain tumor. [ 1 ] [ 2 ] The metastasis typically shares a cancer cell type with the original site of the cancer. [ 3 ]
Clinically, CNS metastasis is known to cause haemorrhage or obstruction in the cranial portion of the CNS leading to hydrocephalus. [9] Additionally, metastatic lesions are usually discrete within the brain and appear as spherical masses that displace the brain parenchyma rather than invading the tissues. [10]
Since NM is a result of primary cancer metastasis and can develop from primary brain tumors or parenchymal metastasis when tumor cells are lodged in small central nervous system (CNS) vasculature, causing local ischemia and vessel damage which result in tumor spillage into the Virchow-Robin spaces and providing access to the subarachnoid space.
This is an accepted version of this page This is the latest accepted revision, reviewed on 18 January 2025. Neoplasm in the brain Medical condition Brain tumor Other names Intracranial neoplasm, brain tumour, brain cancer Brain metastasis in the right cerebral hemisphere from lung cancer, shown on magnetic resonance imaging Specialty Neurosurgery, neuro-oncology Symptoms Vary depending on the ...
Life expectancy ~ 10 months with treatment (5 year survival <30%) Embryonal tumor with multilayered rosettes (ETMR) is an embryonal central nervous system tumor . [ 1 ] [ 2 ] It is considered an embryonal tumor because it arises from cells partially differentiated or still undifferentiated from birth, usually neuroepithelial cells , stem cells ...
Brain metastasis can be single or multiple and involve any portion of the brain. Metastasis to dural structures generally occurs by hematogenous spread or direct invasion from a contiguous bone. Dural metastases can invade the underlying brain and cause focal edema and associated neurologic symptoms. These processes tend to cause seizures early ...
Once cancerous, these cells are predisposed to spread along existing paths in the brain, typically along white-matter tracts, blood vessels and the perivascular space. [34] The tumor may extend into the meninges or ventricular wall, leading to high protein content in the cerebrospinal fluid (CSF) (> 100 mg/dl), as well as an occasional ...
Neuroblastoma often spreads to other parts of the body before any symptoms are apparent, and 50 to 60% of all neuroblastoma cases present with metastases. [8] The most common location for neuroblastoma to originate (i.e., the primary tumor) is in the adrenal glands. This occurs in 40% of localized tumors and in 60% of cases of widespread disease.