Editing Brain tumor (section)

===Oligodendrogliomas===
{{Main|Oligodendroglioma}}
[[Oligodendroglioma]]s are incurable but slowly progressive malignant brain tumors. They can be treated with [[Segmental resection|surgical resection]], [[chemotherapy]], [[radiotherapy]] or a combination. For some suspected low-grade (grade II) tumors, only a course of watchful waiting and symptomatic therapy is opted for. These tumors show co-deletions of the p and q arms of [[chromosome 1 (human)|chromosome 1]] and [[chromosome 19 (human)|chromosome 19]] respectively (1p19q co-deletion) and have been found to be especially chemosensitive with one report claiming them to be one of the most chemosensitive tumors.<ref name=":12" /><ref>{{cite journal |last1=Ty |first1=A. U. |last2=See |first2=S. J. |last3=Rao |first3=J. P. |last4=Khoo |first4=J.B.K. |last5=Wong |first5=M. C. |title=Oligodendroglial tumor chemotherapy using "decreased-dose-intensity" PCV: A Singapore experience |journal=Neurology |date=24 January 2006 |volume=66 |issue=2 |pages=247–249 |doi=10.1212/01.wnl.0000194211.68164.a0 |pmid=16434664 |s2cid=31170268 }}</ref> A median survival of up to 16.7 years has been reported for grade II oligodendrogliomas.<ref>{{cite web |url=http://www.neurology.org |title=Neurology |publisher=Neurology |access-date=17 February 2012 |url-status=live |archive-url=https://web.archive.org/web/20120219094513/http://www.neurology.org/ |archive-date=19 February 2012  }}</ref>