Difference between revisions of "Angiocentric glioma"
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==Molecular== | ==Molecular== | ||
* Deletion-truncation breakpoints in MYB/MYBL on 6q23-<ref>{{Cite journal | last1 = Ramkissoon | first1 = LA. | last2 = Horowitz | first2 = PM. | last3 = Craig | first3 = JM. | last4 = Ramkissoon | first4 = SH. | last5 = Rich | first5 = BE. | last6 = Schumacher | first6 = SE. | last7 = McKenna | first7 = A. | last8 = Lawrence | first8 = MS. | last9 = Bergthold | first9 = G. | title = Genomic analysis of diffuse pediatric low-grade gliomas identifies recurrent oncogenic truncating rearrangements in the transcription factor MYBL1. | journal = Proc Natl Acad Sci U S A | volume = 110 | issue = 20 | pages = 8188-93 | month = May | year = 2013 | doi = 10.1073/pnas.1300252110 | PMID = 23633565 }}</ref> | * Deletion-truncation breakpoints in MYB/MYBL on 6q23-<ref>{{Cite journal | last1 = Ramkissoon | first1 = LA. | last2 = Horowitz | first2 = PM. | last3 = Craig | first3 = JM. | last4 = Ramkissoon | first4 = SH. | last5 = Rich | first5 = BE. | last6 = Schumacher | first6 = SE. | last7 = McKenna | first7 = A. | last8 = Lawrence | first8 = MS. | last9 = Bergthold | first9 = G. | title = Genomic analysis of diffuse pediatric low-grade gliomas identifies recurrent oncogenic truncating rearrangements in the transcription factor MYBL1. | journal = Proc Natl Acad Sci U S A | volume = 110 | issue = 20 | pages = 8188-93 | month = May | year = 2013 | doi = 10.1073/pnas.1300252110 | PMID = 23633565 }}</ref> | ||
* MYB-QKI rearrangements <ref>{{Cite journal | last1 = Bandopadhayay | first1 = P. | last2 = Ramkissoon | first2 = LA. | last3 = Jain | first3 = P. | last4 = Bergthold | first4 = G. | last5 = Wala | first5 = J. | last6 = Zeid | first6 = R. | last7 = Schumacher | first7 = SE. | last8 = Urbanski | first8 = L. | last9 = O'Rourke | first9 = R. | title = MYB-QKI rearrangements in angiocentric glioma drive tumorigenicity through a tripartite mechanism. | journal = Nat Genet | volume = 48 | issue = 3 | pages = 273-82 | month = Mar | year = 2016 | doi = 10.1038/ng.3500 | PMID = 26829751 }}</ref> | |||
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Image:Neuropathology_case_V_07.jpg | Angiocentric glioma - MIB-1 immunostain (WC/jensflorian) | Image:Neuropathology_case_V_07.jpg | Angiocentric glioma - MIB-1 immunostain (WC/jensflorian) | ||
</gallery> | </gallery> | ||
==See also== | ==See also== | ||
Revision as of 13:52, 25 March 2019
| Angiocentric glioma | |
|---|---|
| Diagnosis in short | |
 Angiocentric glioma. H&E stain. | |
| LM DDx | astrocytoma, ependymoma. |
| IHC | GFAP +/-ve, EMA +/-ve. |
| Gross | enlargened gyri |
| Site | brain - usu. grey matter |
|
| |
| Clinical history | epilepsy-associated |
| Prevalence | very rare - no age prevalence |
| Prognosis | good (WHO Grade I) |
Angiocentric glioma, is a WHO grade I glioma. It is super rare.
General
- previously called monomorphic angiocentric glioma or angiocentric neuroepithelial tumour.
- Own entity introduced in the WHO 2007 classification.[1]
- Low-grade glioma - WHO Grade I by definition, but a single recurrence with anaplastic features has been described.[2]
- Classically a non-enhancing, superficial cerebrocortical lesion.
- Associated with epilepsy.
- No association with any tumour syndromes.
Gross
- Usually well-circumscribed.
- Enlargement of cortex possible.
Microscopic
Features:
- Monommorphic, bipolar, spindled cells around blood vessels.
- mimicking ependymal pseudorosettes (DD: ependymoma).
- Solid growth with palisaded arrays possible.
- Low cellularity and rich myxoid background- when compared to classical astrocytomas.
- Mitotic activity may lead to eroneous diagnosis of anaplastic astrocytoma.
- Variably GFAP, EMA and S-100 positive
- No IDH1/2 mutations. [3]
- MIB-1 between 1-5%
DDx of angiocentric glioma (brief):
Molecular
Images
Angiocentric glioma - low mag. (WC/jensflorian)
Angiocentric glioma - intermed mag. (WC/jensflorian)
Angiocentric glioma - high mag. (WC/jensflorian)
Angiocentric glioma - GFAP immunostain (WC/jensflorian)
Angiocentric glioma - EMA immunostain (WC/jensflorian)
Angiocentric glioma - MAP2 immunostain (WC/jensflorian)
Angiocentric glioma - MIB-1 immunostain (WC/jensflorian)
See also
References
- ↑ Brat, DJ.; Scheithauer, BW.; Fuller, GN.; Tihan, T. (Jul 2007). "Newly codified glial neoplasms of the 2007 WHO Classification of Tumours of the Central Nervous System: angiocentric glioma, pilomyxoid astrocytoma and pituicytoma.". Brain Pathol 17 (3): 319-24. doi:10.1111/j.1750-3639.2007.00082.x. PMID 17598825.
- ↑ Wang, M.; Tihan, T.; Rojiani, AM.; Bodhireddy, SR.; Prayson, RA.; Iacuone, JJ.; Alles, AJ.; Donahue, DJ. et al. (Oct 2005). "Monomorphous angiocentric glioma: a distinctive epileptogenic neoplasm with features of infiltrating astrocytoma and ependymoma.". J Neuropathol Exp Neurol 64 (10): 875-81. PMID 16215459.
- ↑ Raghunathan, A.; Olar, A.; Vogel, H.; Parker, JR.; Coventry, SC.; Debski, R.; Albarracin, CT.; Aldape, KD. et al. (Aug 2012). "Isocitrate dehydrogenase 1 R132H mutation is not detected in angiocentric glioma.". Ann Diagn Pathol 16 (4): 255-9. doi:10.1016/j.anndiagpath.2011.11.003. PMID 22445362.
- ↑ Ramkissoon, LA.; Horowitz, PM.; Craig, JM.; Ramkissoon, SH.; Rich, BE.; Schumacher, SE.; McKenna, A.; Lawrence, MS. et al. (May 2013). "Genomic analysis of diffuse pediatric low-grade gliomas identifies recurrent oncogenic truncating rearrangements in the transcription factor MYBL1.". Proc Natl Acad Sci U S A 110 (20): 8188-93. doi:10.1073/pnas.1300252110. PMID 23633565.
- ↑ Bandopadhayay, P.; Ramkissoon, LA.; Jain, P.; Bergthold, G.; Wala, J.; Zeid, R.; Schumacher, SE.; Urbanski, L. et al. (Mar 2016). "MYB-QKI rearrangements in angiocentric glioma drive tumorigenicity through a tripartite mechanism.". Nat Genet 48 (3): 273-82. doi:10.1038/ng.3500. PMID 26829751.