Difference between revisions of "Astrocytoma"

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An '''astrocytoma''' is a neoplasm derived from an [[neurohistology|astrocyte]]. ~~Diffuse astrocytomas~~ are common glial tumours and grouped together with [[Oligodendroglioma]] and glioneuronal tumours in the current WHO brain tumor classficiation. Some (often circumscribed) astrocytic tumors and pediatric tumours are biologically different from adult-onset diffuse astrocytomas. An overview of CNS tumours is found in the ''[[CNS tumours]]'' article.

An '''astrocytoma''' is a neoplasm derived from an [[neurohistology|astrocyte]]. Astrocytomas are common glial tumours and grouped together with [[Oligodendroglioma]] and glioneuronal tumours in the current WHO brain tumor classficiation. Some (often circumscribed) astrocytic tumors and pediatric tumours are biologically different from adult-onset diffuse astrocytomas. An overview of CNS tumours is found in the ''[[CNS tumours]]'' article.

=Categorization=

Astrocytomas can be categorized in serveral ways.

* Common vs. uncommon tumours.

* Adult vs. pediatric tumours.

* Circumscribed vs. diffusely growing astrocytomas.

=Overview=

Until 2016 WHO classification, roman numerals I-IV were used for grading. The ~~upcoming~~ 2021 WHO classification ~~will use~~ arabic numbering 1-4 instead.

Until 2016 WHO classification, roman numerals I-IV were used for grading. The current 2021 WHO classification uses arabic numbering 1-4 for CNS WHO grading instead.

{| class="wikitable sortable"

! Name

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|}

=Common=

=Common Astrocytomas=

==Pilocytic astrocytoma==

* Benign, cystic, infratentorial.

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=Uncommon=

=Uncommon Astrocytomas=

==Diffuse astrocytoma, MYB- or MYBL-altered==

* Pediatric-type diffuse low-grade glioma.

Difference between revisions of "Astrocytoma"

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-An '''astrocytoma''' is a neoplasm derived from an [[neurohistology|astrocyte]].  Diffuse astrocytomas are common glial tumours and grouped together with [[Oligodendroglioma]] and glioneuronal tumours in the current WHO brain tumor classficiation.  Some (often circumscribed) astrocytic tumors and pediatric tumours are biologically different from adult-onset diffuse astrocytomas. An overview of CNS tumours is found in the ''[[CNS tumours]]'' article.
+An '''astrocytoma''' is a neoplasm derived from an [[neurohistology|astrocyte]].  Astrocytomas are common glial tumours and grouped together with [[Oligodendroglioma]] and glioneuronal tumours in the current WHO brain tumor classficiation.  Some (often circumscribed) astrocytic tumors and pediatric tumours are biologically different from adult-onset diffuse astrocytomas. An overview of CNS tumours is found in the ''[[CNS tumours]]'' article.
+=Categorization=
+Astrocytomas can be categorized in serveral ways.
+* Common vs. uncommon tumours.
+* Adult vs. pediatric tumours.
+* Circumscribed vs. diffusely growing astrocytomas.
 =Overview=
-Until 2016 WHO classification, roman numerals I-IV were used for grading. The upcoming 2021 WHO classification will use arabic numbering 1-4 instead.
+Until 2016 WHO classification, roman numerals I-IV were used for grading. The current 2021 WHO classification uses arabic numbering 1-4 for CNS WHO grading instead.
 {| class="wikitable sortable"
 ! Name
@@ Line 66: / Line 72: @@
 |}
-=Common=
+=Common Astrocytomas=
 ==Pilocytic astrocytoma==
 * Benign, cystic, infratentorial.
@@ Line 103: / Line 109: @@
 {{Main|Glioblastoma}}
-=Uncommon=
+=Uncommon Astrocytomas=
 ==Diffuse astrocytoma, MYB- or MYBL-altered==
 * Pediatric-type diffuse low-grade glioma.