Category | Examples | |
---|---|---|
Reactive | Parenchyma surrounding slowly growing, low-grade tumors | Hemangioblastoma, craniopharyngioma |
Parenchyma surrounding cysts | Syringomyelia, pineal cyst | |
Parenchyma surrounding vascular malformations | Arteriovenous malformations, cavernomas | |
Parenchyma surrounding chronic inflammation | Multiple sclerosis | |
Neoplastic | Pilocytic astrocytoma, ganglioglioma, pleomorphic xanthoastrocytoma | |
Genetic/metabolic | Alexander disease |
Note:—This table has been modified from refs. 12 and 18. With permission.