Astrozytom
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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).
- diffuse
- diffuse astrocytoma: WHO grade II (10-15% of astrocytomas)
- anaplastic astrocytoma: WHO grade III (25% of astrocytomas)
- glioblastoma: WHO grade IV (50-60% of astrocytomas)
- localized
- pilocytic astrocytoma: WHO grade I
- subependymal giant cell astrocytoma: WHO grade I
- pilomyxoid astrocytoma: ~WHO grade II
- pleomorphic xanthoastrocytoma: WHO grade II
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:
- Pilozytisches Astrozytom
- Glioblastoma multiforme
- Gangliogliom
- Pleomorphes Xanthoastrozytom
- gemistocytic astrocytoma
- subependymales Riesenzellastrozytom
- spinales Astrozytom
- WHO Grade II
- diffuses Astrozytom
- Oligoastrozytome
- pilomyxoides Astrozytom
und weiter:
- Funikuläre Myelose
- vertebrale Metastasen
- Skoliose
- Oligodendrogliom
- Tumoren der Pinealisregion
- Superfizielle Hämosiderose der Leptomeningen
- extrapontine myelinolysis
- Hirntumoren
- Hypophysenadenom
- intramedullary spinal metastasis
- Pineozytom
- Pineoblastom
- intraventrikuläres Meningeom
- Tumoren der hinteren Schädelgrube
- spinal myxopapillary ependymoma
- meningeales Melanozytom
- intraspinale zystische Läsionen
- Dysembryoplastischer neuroepithelialer Tumor
- Limbische Enzephalitis
- zerebrale Radionekrose
- hypertrophic olivary degeneration
- Somatostatin-Rezeptor-Szintigrafie
- fetale Hirntumoren
- fibrillary astrocytoma
- beschleunigte Skelettreifung
- spinales Ependymom
- intraaxial
- spinale Metastasen
- spinal primitive neuroectodermal tumour
- Isocitrat-Dehydrogenase
- infratentorielles pilozytisches Astrozytom
- spinales Ependymom des Filum terminale
- intramedulläres Astrozytom
- Astrozytom des Thalamus
- gemistocytic astrocytoma IDH mutant (WHO Grade II)
- Primitiver neuroektodermaler Tumor des ZNS
- multiple FNH syndrome
- Neoplasien der Cauda equina
- gemistocystic astrocytoma
- Anaplastisches Astrozytom
- Pilozytisches Astrozytom des Nervus opticus
- juveniles zerebelläres pilozytisches Astrozytom
- supratentorieller primitiver neuroectodermaler Tumor (PNET)
- Grading Astrozytom
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