Astrocytic tumors

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is part of a series which can be scrolled interactively with the mousewheel or mouse dragging. This is done by using Template:Imagestack. The series is found in the category Pilocytic astrocytoma - MRI - case 001. Pilozytisches Astrozytom WHO Grad I vom linken Nervus opticus ausgehend. MRT in verschiedenen Wichtungen und Ebenen.
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This image
is part of a series which can be scrolled interactively with the mousewheel or mouse dragging. This is done by using Template:Imagestack. The series is found in the category Pilocytic astrocytoma - MRI - case 001. Pilozytisches Astrozytom WHO Grad I vom linken Nervus opticus ausgehend. MRT in verschiedenen Wichtungen und Ebenen.
Wikipedia • CC BY-SA 3.0
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Astrocytic tumors are primary central nervous system tumors that either arises from astrocytes or appear similar to astrocytes on histology having arisen from precursor cells. They are the most common tumors arising from glial cells.

They can be divided into those that are diffuse in growth (the vast majority, generally having higher grade and poorer prognosis) and those that are localized (tend to have a lower grade and better prognosis).

Additionally, some tumors also contain astrocytic components, and it is often this component that dictated biological behavior. Examples include:

All these tumors have strikingly differing imaging appearances, treatment and prognosis and thus they are, along with spinal astrocytomas discussed separately.

NB: gliomatosis cerebri, fibrillary astrocytoma and  protoplasmic astrocytoma are no longer recognized in the current WHO classification of CNS tumors

Siehe auch:
und weiter: